"Anger flared in Vakama. He'd had quite enough of being led around by Makuta. He willed the external temperature of his arm to shoot up several thousand degrees. Unprepared, Makuta released him with a cry of pain (...) To his surprise, Makuta was laughing." Time Trap p 73
That is a lot of heat. And it barely is enough for a surprise attack. I don't think this Antidermis would be affected by a regular fire, because fire can be caused by immense heat.