When dealing with a rather fishy situation…

RD/KP14-JP059 ケミカライズ・デスパイズ Chemicalize Despise
Normal Trap Card
[RQUIREMENT] When an attack is declared on a face-up Pyro monster you control.
[EFFECT] Negate that attack. If the monster being attacked has a higher Level than the monster attacking, then, you can destroy the attacking monster.