योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-75, verse-8

कुर्वन्दानवकार्याणि पातालतलपालकः ।
अनपायं निराक्रोशं प्रह्लादो ह्लादमागतः ॥ ८ ॥

kurvandānavakāryāṇi pātālatalapālakaḥ ,
anapāyaṃ nirākrośaṃ prahlādo hlādamāgataḥ 8

8. kurvan dānavakāryāṇi pātālatalapālakaḥ
anapāyam nirākrośam prahlādaḥ hlādam āgataḥ

8. prahlādaḥ pātālatalapālakaḥ dānavakāryāṇi
kurvan anapāyam nirākrośam hlādam āgataḥ

8. Although performing the duties of the demons and serving as the protector of the nether regions, Prahlāda remained unharmed and beyond reproach, having attained profound joy.

Words meanings summery:

• कुर्वन् (kurvan) - doing, performing

• दानवकार्याणि (dānavakāryāṇi) - duties of demons, demonic actions

• पातालतलपालकः (pātālatalapālakaḥ) - protector of the nether regions (Pātāla)

• अनपायम् (anapāyam) - without harm, free from danger

• निराक्रोशम् (nirākrośam) - without reproach, blameless

• प्रह्लादः (prahlādaḥ) - Prahlāda (name of a devotee-demon)

• ह्लादम् (hlādam) - joy, delight, pleasure

• आगतः (āgataḥ) - attained, arrived, reached

Words meanings and morphology

कुर्वन् (kurvan) - doing, performing

(adjective)

Nominative, masculine, singular of kṛ

kṛ - to do, make, perform

Root: kṛ (class 8)

Note: Present Active Participle

दानवकार्याणि (dānavakāryāṇi) - duties of demons, demonic actions

(noun)

Accusative, neuter, plural of dānavakārya

dānavakārya - duty of a demon, demonic action

Compound type : ṣaṣṭhī-tatpuruṣa (dānava+kārya)

• dānava – demon, a descendant of Danu
  noun (masculine)
• kārya – duty, action, what is to be done
  noun (neuter)
  Gerundive
  Derived from root kṛ (to do)
  Root: kṛ (class 8)

पातालतलपालकः (pātālatalapālakaḥ) - protector of the nether regions (Pātāla)

(noun)

Nominative, masculine, singular of pātālatalapālaka

pātālatalapālaka - protector of the Pātāla region

Compound type : tatpuruṣa (pātāla+tala+pālaka)

• pātāla – the lowest of the seven nether worlds
  proper noun (neuter)
• tala – surface, region, flat ground
  noun (neuter)
• pālaka – protector, guardian, ruler
  noun (masculine)
  From root pā (to protect)
  Root: pā (class 2)

अनपायम् (anapāyam) - without harm, free from danger

(adjective)

Accusative, neuter, singular of anapāya

anapāya - absence of harm or danger, safety, security

Compound type : nañ-tatpuruṣa (an+apāya)

• an – not, non-, un-
  indeclinable
• apāya – harm, danger, loss, decline
  noun (masculine)

Note: Used adverbially here.

निराक्रोशम् (nirākrośam) - without reproach, blameless

(adjective)

Accusative, neuter, singular of nirākrośa

nirākrośa - free from reproach, blame, or curse

Compound type : avyayībhāva (nir+ākrośa)

• nir – without, out of, cessation
  indeclinable
• ākrośa – reproach, abuse, curse
  noun (masculine)

Note: Used adverbially here.

प्रह्लादः (prahlādaḥ) - Prahlāda (name of a devotee-demon)

(proper noun)

Nominative, masculine, singular of prahlāda

prahlāda - Prahlāda (a Puranic character, son of Hiranyakashipu, famous devotee of Vishnu)

ह्लादम् (hlādam) - joy, delight, pleasure

(noun)

Accusative, masculine, singular of hlāda

hlāda - joy, delight, happiness

आगतः (āgataḥ) - attained, arrived, reached

(adjective)

Nominative, masculine, singular of āgata

āgata - come, arrived, attained

Past Passive Participle

Derived from root gam (to go) with prefix ā-

Prefix: ā

Root: gam (class 1)