Silence

Casting Time: 1 action - Range: 120 feet -
Components: V, S - Duration: Conc. 10 minutes
For the duration, no sound can be created within
or pass through a 20-foot-radius sphere centered
on a point you choose within range. Any creature
or object entirely inside the sphere is immune to
thunder damage, and creatures are deafened while
entirely inside it. Casting a spell that includes a
verbal component is impossible there.