Vesting Prayers are prayers which are spoken while a cleric puts on vestments as part of a liturgy, in both the Eastern and Western churches. They feature as part of the liturgy in question itself, and take place either before or after a liturgical procession or entrance to the sanctuary, as depends on the particular liturgical rite or use which is being observed.
At the Buskins: Calcea, Domine, pedes meos in praeparationem evangelii pacis, et protege me in velamento alarum tuarum. "Shod my feet, Lord, unto the preparation of the gospel of peace, and protect me under the cover of thy wings." (Ephesians VI, XV and Psalm LX, V)
The Bishop says, as he takes off the Cappa magna: Exue me, Domine, veterem hominem cum moribus et actibus suis: et indue me novum hominem, qui secundum Deum creatus est in justitia, et sanctitate veritatis. "Take off of me, O Lord, the old man with his manners and deeds: and put on me the new man, who according to God is created in justice, and the holiness of truth." (Ephesians IV, XXII and XXIV)
He washes his hands, saying: Da, Domine, virtutem manibus meis ad abstergendam omnem maculam immundam; ut sine pollutione mentis et corporis valeam tibi servire. "Give virtue to my hands, O Lord, that being cleansed from all stain I might serve you with purity of mind and body."
At the Amice: Impone, Domine, galeam salutis in capite meo, ad expugnandas omnes diabolicas fraudes, inimicorum omnium versutias superando. Impose, O Lord, the helmet of salvation upon my head, to overthrow all diabolic (of the devil) deceits, overcoming the savagery of all my enemies.'
At the Alb: Dealba me, Domine, et a delicto meo munda me; ut cum his, qui stolas suas dealbaverunt in sanguine Agni, gaudiis perfruar sempiternis. 'Wash me, O Lord, and cleanse my heart, that with them that have washed their robes in the blood of the Lamb, I may eternally rejoice.'