True Shield

You teleport to an unoccupied space between an ally you can see and the source of the attack and raise a barrier of magical force. Allies within 10 feet of you add 10 to their saving throw against the triggering effect. On a success, they instead take no damage, or half damage on a failure. In addition, creatures affected by this spell gain a shimmering layer of magical energy around their bodies, granting a +5 bonus to the next breath weapon saving throw or area-of-effect Dexterity saving throw that they make in the next minute.