If you have the memory of the Holy Prophet in your heart, then torment cannot come upon you, it cannot come at all. It is as if you have to save yourself from the torment. Prayer is also you and effect is also you. He who remembers the Holy Prophet in his heart is saved from torment.
It is as if this name is such that it does not allow any deed to go bad and this remembrance is such that it brings one closer to Allah and this recitation is such that the supplication is accepted, therefore the supplication is accepted, if this medium is preserved. Prayers will be accepted