In older prayer books (often found as PDFs online in esoteric circles), a shorter Latin verse is often cited as the "Password" or key prayer:
"O Gloriose Sancte Bartholomaei, Apostole Christi, qui demonem in templo eius expulisti, ora pro nobis peccatoribus, ut digni efficiamur promissionibus Christi."
(Translation: O Glorious Saint Bartholomew, Apostle of Christ, who cast the demon out of his temple, pray for us sinners, that we may be made worthy of the promises of Christ.)
Sites like La Prière Chrétienne (The Christian Prayer) or Abbaye Saint-Benoît often provide downloadable PDF compilations of prayers to the Apostles. Search within their "Prière aux Apôtres" section.
To understand the prayer, one must first understand the saint. The name "Bathol" is a Francophone contraction or variant of Saint Bartholomew, one of the twelve apostles of Jesus Christ.
In French folk Catholicism, Saint Bathol became a protector against skin diseases, blood disorders, and sudden death. The oraison attributed to him is a powerful intercessory prayer believed to invoke his specific protection.
In any word processor (Microsoft Word, Google Docs, LibreOffice):