Ritual of Holy Fire

Ritual of Holy Fire is a type of rite conducted by a group of individuals.

Background
This is a ritual focus on forming fire of the holy element. In order to do so, requires the use of normal fire initially and then have it blessed with holy attributes by divine magic casters like Calca Bessarez. For that reason, individuals performing the ceremony must first pour the oil and ignite it on fire, so it could later be bless with the kind of holy element strong against demons.

Additionally, the necessary preparations for conducting this ritual happens to have a simplified version. Simplifying the Holy Fire ritual spell however, would place a great deal of strain on the user’s body because of it. Therefore, this method was not something which neither one of the Holy Queen’s subordinates ought to recommend doing since they're charged with keeping her safe.

Abilities and Powers
Many Demons were resistant to fire, but the Holy Fire created from doing this ritual was imbued with the holy element, and fire resistance was only half as effective against it. According to Remedios Custodio, she labels the Holy Fire as some type of attack which can be used for offensive means.

Trivia

 * The Ritual of Holy Fire can actually be performed without more people around to carry it out, but is most likely comes at a heavier cost on the user's body if done.
 * This ritual became known in Volume 12's Light Novel.