The numbers after the ability name represent tithing points, mana, and minimum skill, in that order. For example, Holy Light says 10/15 (55/105), meaning that it uses 10 tithing points and 15 mana, and requires a minimum skill of 55 Chivalry to cast and at 105 you have 100% chance to cast.
Cleanse by Fire (Expor Flamus) 10/10 (5/55)
An ability that can be used either to cure a target of poison, at the cost of a few of the Paladin's hit points. Is able to cure any level of poison; doesn't appear to fail at all.
Close Wounds (Obsu Vulni) 10/10 (0/50)
A healing ability which replenishes approximately 25-30 hit points at decent karma levels. May heal up to 39 hit points at high karma level.
Consecrate Weapon (Consecrus Arma) 10/10 (15/65)
An ability that enchants the paladin's weapon so that it targets an opponent's weakest resistance (physical, fire, cold, poison, or energy, depending on the opponent's resistances). This ability does not last long.
Divine Fury (Divinum Furis) 10/15 (25/75)
An ability that increases a paladin's attack power and accuracy, but lowers defense. Instantly refreshes one's stamina.
Enemy of One (Forul Solum) 10/20 (45/95)
An ability that allows the paladin to become much stronger against the next type of enemy hit, but weaker against other types of enemies. Increases the physical damage against the enemy type while increasing the damage inflicted by other types.
Dispel Evil (Dispiro Malas) 10/10 (35/85)
An ability that has a chance to frighten any evil creatures in the area. Also has the power to drain a transformed Necromancer of mana and stamina. Does NOT dispel creatures; does not appear to affect revenants.
Holy Light (Augus Luminos) 10/10 (55/105)
An ability that works as an area effect spell, similar to a mage's Earthquake.
Noble Sacrifice (Dium Prostra) 30/20 (65/115)
A powerful ability that resurrects all targets surrounding the paladin, cleanses them of poisons and curses, and heals them. In return, the paladin is reduced to 1 hit point, 1 mana, and 1 stamina.
Remove Curse (Externo Vomica) 10/20 (5/55)
An ability that reverses all negative stat effects (such as Clumsy or Curse) and paralysis from a target. Is also used to remove the Necromancy Strangle effect.
Sacred Journey (Sanctum Viatas) 15/10 (15/65)
A Recall-type ability for paladins which cannot be used when flagged as an aggressor.