Custodi, Domine, quaesumus, Ecclesiam tuam propitiatione perpetua, et quia sine te labitur humana mortalitas, tuis semper auxiliis et abstrahatur a noxiis, et ad salutaria dirigatur.

Guard your Church, we pray, O Lord, in your unceasing mercy,and, since without you mortal humanity is sure to fall, may we be kept by your constant helps from all harm and directed to all that brings salvation.