Ego signo crucis non clipeo

Source: 
Berlin, Staatsbibliothek zu Berlin Preußischer Kulturbesitz, Mus. 40047
Folio: 
112v
Sequence: 
14
Feast: 
Martini
Office/Mass: 
M
Genre: 
A
Position: 
1.3
Cantus ID: 
002587
Mode: 
7
Differentia: 
28b
Differentia database: 
1--l-l-m-lK-k-jk--4 144d
Manuscript Reading Full Text (standardized spelling): 
Ego signo crucis non clipeo protectus aut galea ostium cuneos penetrabo securus