The Egyptian Book of the dead by P. Le Page Renouf and Edouard Naville

4. The deceased speaks of himself as a magician who can cover the head

of the serpent without being hurt. The eyes of the serpent, which have the power of paralyzing, of making impotent (see seventh domain), are given him; the result is, that when he goes to the mountain on which the serpent shows his strength, this strength collapses, as the deceased says: thy strength is in my hand; I am he who lifts, who takes away the strength.