Reflect

Reflect is a threshold Defence ability that requires 34 Defence to use, as well as a shield. When activated, Reflect reduces all damage taken by 50% and rebounds the remaining 50% back to the attacker(s). The damage reduction and reflection effects last 10 seconds. Despite the description, more damage is reflected than taken - roughly 18% more. For example, if a player takes 94 actual damage while under the effect, 111 damage would be dealt on the attacker. This may be a glitch.