རྩ་གསུམ་ཚེ་ཡི་ལྷ་ལ་སྐྱབས་སུ་མཆི།།
Take refuge in the Long-Life Deity embodying the Three Roots.
Longevity, Amitāyus, Sādhanas, Compendium of Sādhanas, Tibetan Masters, Jamyang Khyentse Wangpo, Thangtong Gyalpo