Due to the armor being made of ice, the moment the lightning struck Roy, his entire body immediately sparkled like a ball of lightning.
Roy's first feeling was an extremely intense burning sensation all over his body! His skin seemed to be melting, and the pain made him roar.
Frankly, this was the first time that such a powerful holy power had hit Roy. In the past, he had only come into contact with a little bit of holy water. The lightning released by Uriel was not only very fast, but the holy power contained within had too great of a restraining effect against demons. The conflict between holy light and Roy's dark power naturally brought him immense pain.