Everyone knows the righteous blessing of his most divine holiness, the God-Emperor of Mankind, is a 1hr buff with 0.01 received accuracy, +40,000% health, heroic armour and 5.00 accuracy modifier.
No, it was a shot at the fact that it's an exact copy (sort of) in terms of the Word of the Emperor ability from the Librarian in DoW 1. Cast on a squad it would fight on even if it went under 1 hp, but then units that went under 1 hp would die when the spell ended.
In this case i think they don't die, though. Still very similar.
