Absorb Elements | Reaction

You have resistance to the triggering damage type
until the start of your next turn. Also, the first
time you hit with a melee attack on your next
turn, the target takes an extra 1d6 damage of the triggering type.
When you cast this spell using a spell slot of 2nd
level or higher, the extra damage increases by 1d6
for each slot level above 1st.