The following is a prayer to Ss. Peter and Febronia of Murom recently approved by the Synod of the Russian Orthodox Church for their commemoration (and for the emphasizing of the importance of Christian marriage) that was previously approved for the Sunday prior to September 19th n.s., which was previously approved in December 2012 (along with petitions for the augmented litany).
The original text of this prayer is posted here: http://www.patriarchia.ru/db/text/3005167.html
This translation was graciously provided by Fr. Alexander Lebedeff, with a minor tweak from Fr. German Ciuba.
Prayer to the Holy Pious Prince Peter and Princess Febronia of Murom
O ye who have greatly pleased God as all-wondrous miracleworkers, pious Prince Peter and Princess Febronia, intercessors of Murom, protectors of honorable marriage and zealous prayerful intermediaries for all of us to the Lord!
During the days of your lives you showed an example of piety, Christian love and faithfulness to one another even to the grave, and thus you glorified lawful and blessed marriage.
For this we turn to you and we pray with firm zeal: lift up for us sinners, your holy prayers to the Lord our God, and beseech for us all that is good and profitable for our souls and bodies: true faith, good hope, unhypocritical love, unshakeable piety, success in good deeds*, and, especially, through your prayers grant to those who have been joined in the bond of marriage chastity, love for one another in the bond of peace, oneness of mind and body, a bed undefiled, a blameless life, long-lived seed, the blessing of children, homes filled with all good things, and, in eternal life the unfading crown of Heavenly glory.
Yea, O holy wonder-workers! Disdain not our prayers, which we raise up to you with compunction, but be our eternal intercessors before the Lord and grant unto us through your intercessions to receive eternal salvation and to inherit the Heavenly Kingdom, that we may glorify the inexpressible love for mankind of the Father, and the Son, and the Holy Spirit, God, worshiped in the Holy Trinity, unto the ages of ages. Amen.
*if the Moleben is served for though who are about to enter into matrimony, then the prayer is read in the following redaction:
especially to those who wish to be joined in the bond of marriage grant, through your prayers, chastity, faithfulness to one another and love in the bond of peace, oneness of mind and body, a blameless life and, in eternal life the unfading crown of Heavenly glory.