महान्ति huge, प्रभूतानि plenty, शुष्काणि dry, काष्ठानि सन्ति are logs here, अथ or, तैः with them, चिताम् pyre, प्रज्वाल्य flaming it, सर्वे all, पावकम् fire, प्रविशामः will enter.

There are plenty of dry logs of wood. We will prepare a pyre with them, set fire to it and we all will enter it.