महाभारतः mahābhārataḥ - book-12, chapter-103, verse-12

शस्त्रैः पत्रैः कवचैः केतुभिश्च सुभानुभिर्मुखवर्णैश्च यूनाम् ।
भ्राजिष्मती दुष्प्रतिप्रेक्षणीया येषां चमूस्तेऽभिभवन्ति शत्रून् ॥१२॥

12. śastraiḥ patraiḥ kavacaiḥ ketubhiśca; subhānubhirmukhavarṇaiśca yūnām ,
bhrājiṣmatī duṣpratiprekṣaṇīyā; yeṣāṁ camūste'bhibhavanti śatrūn.

12. śastraiḥ patraiḥ kavacaiḥ ketubhiḥ
ca subhānubhiḥ mukhavarṇaiḥ ca
yūnām bhrājiṣmatī duṣpratiprekṣaṇīyā
yeṣām camūḥ te abhibhavanti śatrūn

12. yeṣām yūnām śastraiḥ patraiḥ kavacaiḥ ketubhiḥ ca subhānubhiḥ mukhavarṇaiḥ ca (yuktā) camūḥ bhrājiṣmatī duṣpratiprekṣaṇīyā (bhavati),
te śatrūn abhibhavanti.

12. The army (camū) whose weapons, shields, armors, and banners, along with the radiant faces of its young warriors, are brilliant and difficult to gaze upon—those whose army possesses these qualities conquer their enemies.

Words meanings summery:

• शस्त्रैः (śastraiḥ) - with weapons, by arms

• पत्रैः (patraiḥ) - with shields or plates of armor (with leaves, with feathers, with plates)

• कवचैः (kavacaiḥ) - with armors, by breastplates

• केतुभिः (ketubhiḥ) - with banners, with flags, with ensigns

• च (ca) - and, also

• सुभानुभिः (subhānubhiḥ) - with great splendor/radiance (with great splendor, with bright rays, by brilliant appearance)

• मुखवर्णैः (mukhavarṇaiḥ) - with radiant faces (with facial complexions, with countenances)

• च (ca) - and, also

• यूनाम् (yūnām) - of youths, of young men

• भ्राजिष्मती (bhrājiṣmatī) - dazzling, shining, resplendent

• दुष्प्रतिप्रेक्षणीया (duṣpratiprekṣaṇīyā) - difficult to behold, hard to look at, invisible

• येषाम् (yeṣām) - whose, of whom, of which

• चमूः (camūḥ) - army, host, troop

• ते (te) - those (warriors) (they (plural))

• अभिभवन्ति (abhibhavanti) - they conquer, they overcome, they overwhelm

• शत्रून् (śatrūn) - enemies, adversaries

Words meanings and morphology

शस्त्रैः (śastraiḥ) - with weapons, by arms

(noun)

Instrumental, neuter, plural of śastra

śastra - weapon, sword, knife, instrument for cutting

पत्रैः (patraiḥ) - with shields or plates of armor (with leaves, with feathers, with plates)

(noun)

Instrumental, neuter, plural of patra

patra - leaf, feather, wing, metal plate, page, shield

कवचैः (kavacaiḥ) - with armors, by breastplates

(noun)

Instrumental, masculine, plural of kavaca

kavaca - armor, cuirass, breastplate

केतुभिः (ketubhiḥ) - with banners, with flags, with ensigns

(noun)

Instrumental, masculine, plural of ketu

ketu - banner, flag, ensign, sign, mark, comet

च (ca) - and, also

(indeclinable)

सुभानुभिः (subhānubhiḥ) - with great splendor/radiance (with great splendor, with bright rays, by brilliant appearance)

(adjective)

Instrumental, masculine, plural of subhānu

subhānu - having good rays, shining brightly, splendid, beautiful

Compound type : bahuvrīhi (su+bhānu)

• su – good, well, excellent, intensely
  indeclinable
• bhānu – ray of light, light, splendor, sun, appearance
  noun (masculine)

मुखवर्णैः (mukhavarṇaiḥ) - with radiant faces (with facial complexions, with countenances)

(noun)

Instrumental, masculine, plural of mukhavarṇa

mukhavarṇa - facial color, complexion of the face, countenance

Compound type : tatpuruṣa (mukha+varṇa)

• mukha – face, mouth, front
  noun (neuter)
• varṇa – color, complexion, appearance, caste, letter
  noun (masculine)

च (ca) - and, also

(indeclinable)

यूनाम् (yūnām) - of youths, of young men

(noun)

Genitive, masculine, plural of yuvan

yuvan - youth, young man, young person

भ्राजिष्मती (bhrājiṣmatī) - dazzling, shining, resplendent

(adjective)

Nominative, feminine, singular of bhrājiṣmat

bhrājiṣmat - shining, radiant, splendid, brilliant

Derived from root √bhrāj (to shine) with suffix -mat

Root: bhrāj (class 1)

दुष्प्रतिप्रेक्षणीया (duṣpratiprekṣaṇīyā) - difficult to behold, hard to look at, invisible

(adjective)

Nominative, feminine, singular of duṣpratiprekṣaṇīya

duṣpratiprekṣaṇīya - difficult to look at, hard to be seen, invisible

Gerundive (Potential Passive Participle)

Gerundive of root √īkṣ (to see) with prefixes prati, pra, and duṣ (badly, difficultly)

Prefixes: duṣ+prati+pra

Root: īkṣ (class 1)

येषाम् (yeṣām) - whose, of whom, of which

(pronoun)

Genitive, masculine, plural of yad

yad - who, which, what

Relative pronoun

चमूः (camūḥ) - army, host, troop

(noun)

Nominative, feminine, singular of camū

camū - army, host, troop, stream

ते (te) - those (warriors) (they (plural))

(pronoun)

Nominative, masculine, plural of tad

tad - that, those

Demonstrative pronoun

अभिभवन्ति (abhibhavanti) - they conquer, they overcome, they overwhelm

(verb)

3rd person , plural, active, present (laṭ) of abhibhavati

Present tense, 3rd person, plural

Root verb √bhū (to be, become) with prefix abhi

Prefix: abhi

Root: bhū (class 1)

शत्रून् (śatrūn) - enemies, adversaries

(noun)

Accusative, masculine, plural of śatru

śatru - enemy, foe, adversary