十二光佛

Amitābha's twelve titles of light. The無量壽經上 gives them as 無量光佛, etc., i.e. the Buddha of light that is immeasurable boundless, irresistible, incomparable, yama (or flaming), pure, joy, wisdom, unceasing, surpassing thought, ineffable, surpassing sun and moon. Another list is given in the 九品往生阿彌陀...經.