Undaset’s Holy Shield

You touch a creature and grant it a coating of healing force that is absorbed when it is injured. Whenever the target takes damage before the spell ends, it regains hit points equal to 1d6 + your spellcasting modifier, and the spell ends. If the target takes damage that would kill it instantly it drops to zero hit points instead, and the spell ends.

At Higher Levels. When casting this spell with a spell slot of 2nd level or higher, the healing of this spell increases by 1d6 for each level above 1st.