Delay

You suspend the impending suffering of a creature you can see. When a creature would take one instance of damage or suffer one status effect, instead that creature is unaffected, and you begin to maintain concentration. If you fail a constitution saving throw to maintain concentration, or willfully drop concentration before the spell's full duration has passed, whatever effect was delayed immediately occurs to the same creature then. 

If you maintain concentration for this spell's duration, the effect is instead cancelled. 

At higher levels: When you cast this spell using a spell slot of sixth level or higher, the spell's duration is reduced to 1 Round.