You are the imperishable, the supreme reality to be known. You are the ultimate resting place of this whole universe. You are undying, the guardian of the eternal dharma. You, I believe, are the everlasting Purusha.
Explanation
Arjuna, awed by Krishna's cosmic form, now names what he sees: the imperishable (akṣara), the final resting place of everything, and the protector of eternal dharma (the moral and cosmic order). Purusha here means the supreme person or being. Advaita readers take "akṣara" as the formless Brahman, while Vaishnava traditions take it as the personal Lord himself, but all agree Arjuna is praising the highest reality.