Retribution Aura vs. Retribution

haha...just got my but kicked by Redmunday. She was enchanted by 'Retribution Aura: Does 10 Holy damage to anyone who strikes you.' sounds an awful lot like Guild Wars's spell 'Retribution: Enchantment Spell. Deals 33% of each attack's damage (maximum 5...17...20) back to the source.'.