Commemoration of St. Cyriacus, Largus, et Smaragdus, Martyrs
Caveat: Older editions of the Missal have St. John Vianney on August 9, with a commemoration of St. Romanus. Therefore, use the Mass of St. John Vianney on August 8, but commemorate St. Cyriacus et al. (listed on August 8) instead of St. Romanus.
Mass of St. John Vianney, Gloria, commemoration of St. Cyriacus et al., no Credo, common preface
Ordinary Office of the feast
Matins: Invitatorium and Hymn from the Common; psalms and antiphons of the feria; first two lessons of the occurring Scripture (second and third joined); lesson 3 of the feast; Te Deum
Lauds: Antiphons and psalms of the feria (first schema), remainder from the Common; oration proper; commemoration of St. Cyriacus et al.
Hours: Antiphons and psalms of the feria, remainder from the Common; oration proper
I Vespers: Of the following Sunday; antiphons and psalms of Saturday; remainder per annum as given in the psalter; proper Magnificat antiphon and oration
Compline: Of Saturday