Good old death knights had this as one of their abilities, a small chance to reflect spells onto a different target. (than themselves)
Certain spells can mimic this ability that could be available to players or other creatures.
The least form would reflect the spell onto another friendly (very friendly! Hurting your buddy instead of you)
The lesser form would reflect the spell onto any target (friend or foe)
The moderate form would reflect the spell onto any foe (of the reflector)
The most power form would reflect the spell directly back onto the caster.