Aegis of Honor

You reach out toward the friendly target, pacing a brief barrier between the target and the target's attacker. The damage the target takes is reduced by 1d8 + your spellcasting ability modifier. If this effect reduces the damage to zero, you can turn the damage back on the attacker. Make a ranged spell attack against the attacker. On a hit, the attacker takes force damage equal to the amount of damage you reduced. 

At Highter Levels. When you cast this spell using a spell slot of 2nd level or highter, the damage the target takes is reduced by an additional 1d8 for each slot level above 1st.