Barrier

As a bonus action, you cause protective sigils to appear whenever you are struck by incoming harm. Until the spell ends, when you are dealt damage, you can reduce it by 1d4 + your spellcasting modifier as a reaction once per turn.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage reduction increases by 1d4 for every slot level above 1st.