Short Prayers for Any Occasion

Glory to God.
Glory to You, Lord, glory to You.
Lord, bless.
Lord, have mercy.
Grant, O Lord.
Lord, save and protect.
Lord Jesus Christ, Son of God, have mercy on us. Amen.
Lord Jesus Christ, Son of God, by the prayers of Your Most Pure Mother and all the saints, have mercy on us. Amen.
God, be merciful to me, a sinner.
Remember me, Lord, when You come into Your Kingdom.
Most Holy Trinity, our God, glory to You.
My refuge is the Father, my support is the Son, my protection is the Holy Spirit. Holy Trinity, glory to You.
All my hope I place in God and in You, O Mother of God, keep me under Your heavenly protection.
Most Holy Theotokos, by the mercy and grace of the Lord save us.
Saint (name of the saint you address) and all the saints, pray to God for us.
Source: kyrios.org.ua