May we be able to master that Nâkiketa rite which is a bridge for sacrificers; also that which is the highest, imperishable Brahman for those who wish to cross over to the fearless shore.

In plain words: This is a prayer: may we master the Nachiketa fire ritual, a bridge for those who make offerings, and also come to know the highest, never-ending Brahman, which carries seekers to the shore where there is no fear.