Holy Circle is a recurring ability in the series.
XI Holy Circle is a level 5 Paladin ability. When used, all party members will have increased resistance from undead enemies. This may translate into a better chance of resisting spells and abilities of undead, but the most obvious effect of the ability is that undead may become intimidated by the presence of a party member and thus miss his attack. The effect lasts for about 30 seconds; however, the duration of this effect is increased to 1 minute and 15 seconds if the Paladin is wearing Gallant Leggings.