A ritual for changing a name of a sick person. This text is recorded in abridged form in Rabbeinu Yeruḥam’s 14th-century work “Sefer Toldot Adam v-Ḥava,” but is almost certainly substantially older than that considering he credits it to the Geonim. Rabbeinu Yeruḥam doesn’t include the text in its entirety, assuming familiarity with the “מְצָלְאִין אֲנַֽחְנָא” opening to prayers. This text is not, to my knowledge, commonly used in any modern rites, but I found a 15th-century Italian siddur here with a prayer that begins with the same formula in full.