“Impenetrable Attack” is a Trap Card with two effects to choose from that can be activated during the Battle Phase.

You can prevent your monster from being destroyed by battle by choosing “Target 1 monster on the field; it cannot be destroyed by battle or by card effects during this Battle Phase.”

“Gladiator Beast” cards such as “Gladiator Beast Laquari” cannot activate their effect if they are destroyed by battle, so try to protect them with this card.