SRD:Dispel Chaos

You are surrounded by constant, blue, lawful energy.

First, you gain a +4 deflection bonus to AC against attacks by chaotic creatures.

Second, on making a successful melee touch attack against an chaotic creature from another plane, you can choose to drive that creature back to its home plane. The creature can negate the effects with a successful Will save (spell resistance applies). This use discharges and ends the spell.

Third, with a touch you can automatically dispel any one enchantment spell cast by an chaotic creature or any one chaotic spell. Exception: Spells that can’t be dispelled by dispel magic also can’t be dispelled by dispel evil. Saving throws and spell resistance do not apply to this effect. This use discharges and ends the spell.