Crusader noob here. What exactly do you mean by "armour is in the 92% range"?
That you can buff your armour by 92%?
If so...holy shit!
My monk would kill for that kind of a buff. As it is now I get one-shot in tier 27+ GRifts, even with 50% dmg reduction (epiphany), 30% base dmg reduction because monk, 50% dmg reduction from dbl unity, 1200 AR, 18k armour, 450k hp.
I'm sure he meant this:
EDIT: In case you don't know the effect of Prophet:
Gain 150% additional Armor while Akarat's Champion is active.
The first time you take fatal damage while Akarat's Champion is active, you will be returned to full health.