Go back, Satan!
An exhortation for Satan to begone, often used in response to temptation. From a popular Medieval Catholic exorcism formula, based on a rebuke by Jesus to Peter in the Vulgate, Mark 8:33: vade retro me Satana ("step back from me, Satan!"). The older phrase vade retro ("go back!") can be found in Terence's Formio I, 4, 203. The phrase has been mocked by a Portuguese slogan, "Vai de metro, Satan