Water Shield

A protective magical force surrounds you, manifesting as a layer of flowing water rushing over armor, skin, and gear. You gain 10 temporary hit points until the start of your next turn. While you have these temporary hit points, you also gain resistance to acid, fire, poison, and non-magical bludgeoning, slashing, and piercing damage. 

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the temporary hit points increase by 10 for each slot.