Salamander Flame

Taiyou no Yoroi (太陽の鎧 Armor of the Sun) is a Fire Magic spell.

Description
A "defensive" spell that engulfs his body in flames and heat, creating a defensive "armor" that makes it impossible for Hephaestus to be touched. The heat that these flames give off is great, and people seem to feel dehydrated just by being near Hephaestus when this is in use. The flames are malleable, bending to Hephaestus' mind and can take whatever form he wills them to, even "grab" a target, though naturally, this damages them greatly. Despite the heat, the flames do no damage to Hephaestus himself, and thus he refers to this as a "perfect defence"