Not sure how factually accurate it is, but Wookieepedia states that willpower is the defense against this spectrum of powers, and that is something that Bane undeniably has underneath his belt in spades.
Would also explain how Revan was capable of defending against it.
Karpyshyn is great at hyping up his characters' strength of will.
Or of course it could be a technique Revan knew and recorded in his holocron, explaining how he and Bane were both capable of defending against it.