Deflection

An invisible ward of magic twists the force of an attack away from you. When you are hit by a melee or ranged attack, you can use your reaction to redirect the attack to a different creature within the original attack’s range. The new target must be a creature you can see and must be a valid target for the original attack. The attacker immediately makes a new attack roll against the new target using the same bonuses and effects as the original attack.

If there is no valid target within the original attack’s range, the spell has no effect.