Book of Common Prayer (page 169)

Wednesday in Holy Week

O Lord God, whose blessed Son our Savior gave his back to
the smiters and hid not his face from shame: Give us grace
to take joyfully the sufferings of the present time, in full
assurance of the glory that shall be revealed; through the same
Jesus Christ thy Son our Lord, who liveth and reigneth with
thee and the Holy Spirit, one God, for ever and ever. Amen.

Maundy Thursday

The Proper Liturgy for this day is on page 274.

Almighty Father, whose dear Son, on the night before he suffered,
instituted the Sacrament of his Body and Blood: Mercifully grant that we
may receive it thankfully in remembrance of Jesus Christ our Lord, who
in these holy mysteries gives us a pledge of eternal life; and who now
liveth and reigneth with thee and the Holy Spirit, one God, for ever and
ever. Amen.

Preface of Holy Week

Good Friday

The Proper Liturgy for this day is on page 276.

Almighty God, we beseech thee graciously to behold this thy
family, for whom our Lord Jesus Christ was contented to be
betrayed, and given into the hands of sinners, and to suffer
death upon the cross; who now liveth and reigneth with thee
and the Holy Spirit, one God, for ever and ever. Amen.