What Does This Mean?

Very roughly..........Holy order of the hand of god?

An expert will be along later to put me right.

The Order of Saints Representatives of the Hand of God.
Ordo --> Order
Sanctorum --> of the Saints (or Holy Ones)
Vicarii --> Respesentatives (or Vicars, or Legates)
Manus --> of the Hand
Dei --> of God

further: the benedictine monks