Lorica

Early Christian.
A Latin word meaning breastplate, Lorica is a type of prayer recited for protection. It comes from the early Christian monastic tradition, though some lorica may have older pagan roots and resemble charms used by pagans.

Loricas

Brigit Bé Bithmaith / Brigit's Lorica (9th century) Irish
Fáeth Fiada / St Patrick's Breastplate (5th-8th century) Irish
Lorica of St Fursey (7th century) Irish
Alexander's Breastplate (10th -14th century) Welsh
Lorica of Gildas / Lorica of Loding
Lorica of Columba / Lorica of Mugron

Also see

Aldhelm’s Lorica  (1st century) Saxon [Riddle]