As per title, the paladin's aura seems to apply to the enemy. I had a combat with the wild boars and I noticed that some of them benefited of the zealous focus effects, as they could turn grazed hits into standard ones.
In the first screen one boar is charmed and gets the zealous focus as you can see
In the second screen the boar is no longer charmed but still can take advantage of the paladin's aura
So...what the heck?!?