Cannotrip

1st-level abjuration

Casting Time: 1 action
Range: 60 feet
Components: V, S
Duration: Concentration, up to 1 minute
Class: Bard, Sorcerer, Warlock, Wizard

Choose a creature you can see within range. Each time the target tries to cast a spell of equal or lower level than this spell, it must succeed on a spellcasting ability check against your spell save DC or waste its action (but not its spell slot).

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you inhibit spells 1 spell level higher for each slot level above 1st.

Source: Heliana's Guide to Monster Hunting