Retribution Aura: while stunned, feared, and disoriented you return 50% damage taken divided among attackers and enemies within 8-10yds. Any direct silencing effect used against the paladin will cause 50% of the effect against the caster on a 1 min cooldown.
The ability is passive and works automatically. I'm debating having the damage reduced based on number of targets, 25% for one and up to 75% for 5+.