The prayer of seven vajra verses is commonly known as Guru Rinpoche’s prayer. The Vajra refers to something that is stable, unchanging and indestructible, which can destroy all negativities, adverse circumstances, obstacles and be all-victorious. There is no (obstacle) so firm that (the vajra) cannot remove.
The prayer of seven vajra verses has an exceptionally strong blessing. It is the most sublime amongst all the various supplication prayers to Guru Rinpoche. In Tibet, those great accomplished masters would mostly recite this prayer while giving blessings to the devotees. As Guru Rinpoche once said, “Reciting this prayer will invoke and invite all Buddhas and Bodhisattvas.”
When oneself or others feel any discomfort in the body, or if the environment is unclean, or when meeting with any obstacle or negative provocation, just reciting this prayer of seven vajra verses with a completely sincere mind, all the Buddhas, Bodhisattvas, Gurus, Triple Gems, virtuous protecting Dharmapalas would be sure to arrive and render help or give blessings.
~ His Holiness Sera Yangtrul Rinpoche
(Translated from Chinese)