Agra's Ambush (EFA - A)

You protect yourself or one willing creature against unwanted mentel intrusion. For the duration, if a protected creature is targeted by a spell or effect that would sense its emotions, read its thoughts, or put the charmed condition on it, the ambush triggered. The attacker must make a Wisdom saving throw, taking 3d10 psychic damage on a failed save, or half as much damage on a successful one.

Once this spell has been triggered, it ends