Protection from Cantrips

By casting this spell, the magic-user provides immunity to the effects of cantrips cast by other magic-users, apprentices, or creatures that use cantrip magic. 

The spell will protect the caster, or one item or person that he or she touches (such as a spell book or a drawer containing spell components). Any cantrip that is cast against the person or item in question dissipates with an audible popping sound. This spell is often used by a magic-user with mischievous apprentices, or one who wishes apprentices to clean or shine an area using elbow grease instead of magic. 

Any unwilling target of this spell must be touched (via a roll "to hit"') and is allowed a saving throw versus spell to escape the effect.