Verse 1

इति संचिन्तयन्नेव प्रह्लादः परवीरहा ।निर्विकल्पपरानन्दसमाधिं समुपाययौ

In plain words

Even as he was pondering thus, Prahlāda, slayer of enemy heroes, entered the nirvikalpa samādhi of supreme bliss.