Elemental Aegis

You bestow a protective enchantment upon a willing creature. Choose a damage type other than bludgeoning, piercing, or slashing. For the duration, any damage of the chosen type against the target is reduced by an amount equal to your spellcasting ability modifier to a minimum of 0.

At higher levels. When you cast this spell with a slot of 2nd level or higher, you can target one additional creature for each slot level above 1st.