Crux sacra sit mihi lux / Non draco sit mihi dux Vade retro satana / Nunquam suade mihi vana Sunt mala quae libas / Ipse venena bibas
This is a comprehensive feature on the history and cultural impact of the phrase "Vade Retro Satana." Crux sacra sit mihi lux / Non draco
"May the Holy Cross be my light / Let not the dragon be my guide / Step back, Satan / Never tempt me with vain things / What you offer me is evil / Drink the poison yourself". The Saint Benedict Medal The Exorcism Formula
It is derived from the Latin Vulgate, specifically Mark 8:33, where Jesus rebukes Saint Peter with the words “vade retro me Satana” ("get behind me, Satan"). specifically Mark 8:33
The shorter phrase “vade retro” (simply "go back") appears as far back as the Roman playwright Terence in his work Phormio . The Exorcism Formula