The medal itself is a sacramental that’s specifically a defense against demons, not merely setting it aside as a sacred object. The text of the St. Benedict medal is itself an exorcism, but for it (as any exorcism) to be of any value, it must always be through the authority of the Church. Let the text of the prayer itself tell it. The traditional exorcism prayer is this:I exorcise (this medal / these medals) in the name of God, the
Father Almighty, who made heaven and earth, the sea, and all
that is in them. May God uproot and expel from (this object /
these objects) all power of the adversary, all attacks of the devil,
and all deceptions of Satan, so that (it/they) may bring health of
mind and body to all who use (it/them). We make this prayer in
the name of the Almighty (+) Father, of Jesus (+) Christ, his Son
our Lord, and of the Holy (+) Spirit, the Paraclete. We pray also
with love for our Lord Jesus Christ, who will come to judge the
living and the dead, and to purify the world by fire.
R: Amen.
Then after the Lord’s prayer and a short litany, the medal is blessed:Let us pray. Almighty God, giver of all good things, we
humbly ask you, through the intercession of St. Benedict, to pour
out your blessing (+) upon (this medal / these medals) imprinted
with sacred prayers and symbols, so that all who use (this medal /
these medals), and devote themselves to the practice of good
works, may obtain health of mind and body, forgiveness of sins,
and the grace of holiness. With the help of your mercy, may they
be able to resist all the attacks and wiles of the devil, and thus be
truly holy and blameless in your sight. Through Christ our Lord.
R: Amen.
P: Let us pray. Lord Jesus Christ, who for the redemption of the
whole world, willed to be born of the Virgin, to be circumcised,
rejected by the Jews, betrayed by the kiss of Judas, bound with
ropes, crowned with thorns, pierced with nails, crucified between
robbers, wounded with a lance, and finally to die on the cross.
Through your most holy Passion, we humbly implore that you
drive away all attacks and wiles of the devil, from those who
devoutly invoke your holy name, while using (this medal / these
medals) imprinted with sacred words and symbols. Lead them
safely to the haven of salvation, where you live and reign
forever.
R: Amen.
P: May the blessing of Almighty God (+) the Father, Son, and
Holy Spirit descend upon (this medal / these medals) and upon
those who use (it / them), and may this blessing remain forever.
R: Amen.