Sancte Bonifati martyr inclite Christi te quesumus ut nos tuis precibus semper gratiae Dei commendare digneris.

O holy distinguished martyr of Christ, Boniface, we beseech you that you should always see fit in your prayers to commend us to God's grace.

from

http://gregorianchantnetwork.blogspot.ca/2014_12_01_archive.html