Every one is his own destroyer or preserver accordingly as he follows evil or good". Parāçara said:—Being thus addressed, the priests of the Daitya-chief were excited with rage, and instantly, by virtue of their magical powers, created a female form enveloped with fiery flame. That highly dreadful figure, under whose tread earth trembled, greatly wroth, struck him instantly on his breast with a dart. That fiery dart reaching speedily the breast of the boy fell on the ground broken into hundred pieces.

In plain words: Prahlada says each person destroys or protects himself by doing evil or good. The angry priests use magic to create a terrifying fiery woman, who stabs Prahlada in the chest with a spear, but the spear breaks into a hundred pieces.