In the Roman Catholic Church, sacramental prayers are specific prayers associated with each of the seven sacraments. These prayers are integral to the rites and rituals of the sacraments, invoking divine grace and blessing. Here are the sacramental prayers for each of the sacraments:

1. Baptism

Prayer of Baptism: The main prayer during the Baptismal rite is the "Baptismal Formula," pronounced by the priest or deacon:

"I baptize you in the name of the Father, and of the Son, and of the Holy Spirit."

2. Confirmation

Prayer of Confirmation: The essential prayer during Confirmation is the "Anointing with Chrism," where the bishop says:

"Be sealed with the Gift of the Holy Spirit."

3. Eucharist (Holy Communion)

Eucharistic Prayer: The Eucharistic Prayer is the central prayer of the Mass, consecrating the bread and wine into the Body and Blood of Christ. There are several versions, with Eucharistic Prayer II being one of the most common:

"Take this, all of you, and eat of it, for this is my Body, which will be given up for you... Take this, all of you, and drink from it, for this is the chalice of my Blood, the Blood of the new and eternal covenant, which will be poured out for you and for many for the forgiveness of sins. Do this in memory of me."

4. Penance (Confession or Reconciliation)

Prayer of Absolution: The priest says this prayer to absolve the penitent from their sins:

"God, the Father of mercies, through the death and resurrection of his Son has reconciled the world to himself and sent the Holy Spirit among us for the forgiveness of sins; through the ministry of the Church may God give you pardon and peace, and I absolve you from your sins in the name of the Father, and of the Son, and of the Holy Spirit."

5. Anointing of the Sick

Prayer of Anointing: The priest anoints the sick person and says:

"Through this holy anointing may the Lord in his love and mercy help you with the grace of the Holy Spirit. Amen. May the Lord who frees you from sin save you and raise you up. Amen."

6. Holy Orders (Ordination)

Prayer of Consecration: During the ordination of a priest, the bishop prays the following:

"Grant, we pray, Almighty Father, to these your servants, the dignity of the Priesthood; renew deep within them the Spirit of holiness; may they henceforth possess this office which comes from you, O God, and is next in rank to the office of Bishop; and by the example of their manner of life, may they instill right conduct."

7. Matrimony (Marriage)

Nuptial Blessing: The priest prays for the couple during the wedding ceremony:

"Holy Father, who formed man in your own image, male and female you created them, so that as husband and wife, united in body and heart, they might fulfill their calling in the world... (the prayer continues with specific blessings and invocations for the couple's union)."

Each of these prayers plays a crucial role in the sacramental rites of the Roman Catholic Church, invoking God's presence and blessings upon the faithful receiving the sacraments.