Fr. Z has the literal and poetic translation on his website. Here's a small taste:
Creator of the starry height,
Thy people’s everlasting light,
Jesu, Redeemer, save us all,
Hear thou thy servants when they call.
Thou, sorrowing at the helpless cry
Of all creation doomed to die,
Didst save our lost and guilty race
By healing gifts of heavenly grace.