Swift Silence

You attempt to consume a spell to replenish your own exhausted magic. When a creature casts a spell within range, make an ability check using your Spellcasting Ability. The DC equals 10 + the spell’s level. On a success, the spell has no effect and you regain a spell slot equivalent to the level of the triggering spell or lower. You cannot regain a spell slot higher than 5th level. If you fail the ability check, the triggering spell's effects occur normally.  

At Higher Levels: When you cast this spell using a spell slot of 6th or higher, the highest level spell slot you can regain is equal to the spell slot you used.