Humanoid Ancient 

The arrow came so fast that Ares and the others barely had the time to react. The only one who could do it in time was Sean, who jumped in front of the group and put his shield in front.

Once the fire arrow collided with his shield, he realized that he would need much more to stop that attack. 

"Mystical Art, Metal element: Iron Statue!" he shouted, then his body and equipment quickly turned into a massive statue of iron weighing several pounds. 

His defense got more steady, the attack didn't seem as heavy as it was before. And, the best overall, he was not getting burned. However, even with his increase in weight and the strength he naturally had, Sean was being pushed backward.

'What a freaking fierce attack! This arrow is not losing speed at all...'

"Don't wait until the attack is fully stopped! You can still move!" Ares shouted, but the group was already moving before he finished.