Yeah, I had a frustrating run-in with a Pally the other day.
Name of said Paladin, just curious.
Also note that battle chant removes all of their own buffs as well, which is huge.
Depending on your class, it leaves them open to take some heavy damage they weren't used to before. Loss of guard and def aura. As well as no reflect shield.
Paladins are resilient bastards, just keep forcing them to dispel themselves and hope the pressure overwhelms them.