When you play ghoul or premade anime characters, just press only dash button, then your character will backflip. 
This backflip has 100% chance to evade all incoming attacks.

Unfortunately, all custom CCG characters can't use it, but premade anime characters like Haise can do it.

Also, there is a small chance to be immune to special move's stun effect, you just use skill at the same time your enemy performs special move.

Also, getting into awakening mode will provide you immunity against such