Wearing or blessing the medal, in temptation, at a house blessing, against spiritual oppression.
The Holy Cross be my light. Let not the dragon be my guide.
Begone, Satan. Never suggest to me thy vanities. Evil are the things thou profferest. Drink thou thine own poison.
On the medal’s face: May we at our death be fortified by His presence. The initials C S P B — Crux Sancti Patris Benedicti, the Cross of our Holy Father Benedict.
Latin
Crux sacra sit mihi lux. Non draco sit mihi dux. Vade retro Satana, nunquam suade mihi vana. Sunt mala quæ libas. Ipse venena bibas.
Where it comes from
The Jubilee medal of St. Benedict (1880). The letters are a prayer, not a charm. A sacramental, not magic.