From the 2003 GIRM:
- The Creed is sung or recited by the priest together with the people (cf. no. 68) with everyone standing. At the words et incarnatus est (by the power of the Holy Spirit . . . and became man) all make a profound bow; but on the solemnities of the Annunciation and of the Nativity of the Lord, all genuflect.
‘by the power of the Holy Spirit … and became man’ is not in the Apostles Creed.
That is dealt with by the following rubric contained within the Missal itself (underline emphasis added):
Loco symboli nicaeno-constantinopolitani, praesertim tempore Quadragesimae et tempore paschali, adhiberi potest symbolum baptismale Ecclesiae Romanae sic dictum Apostolorum.
Credo in unum Deum Patrem omnipoténtem, Creatórem caeli et terrae, et in Iesum Christum, Fílium eius únicum, Dóminum nostrum,
Ad verba quae sequuntur, usque ad María Vírgine, omnes se inclinant.
qui concéptus est de Spíritu Sancto, natus ex María Vírgine, passus sub Póntio Piláto, crucifíxus, mórtuus, et sepúltus, descéndit ad ínferos, tértia die resurréxit a mórtuis, ascéndit ad caelos, sedet ad déxteram Dei Patris omnipoténtis, inde ventúrus est iudicáre vivos et mórtuos. Credo in Spíritum Sanctum, sanctam Ecclésiam cathólicam, sanctórum communiónem, remissiónem peccatórum, carnis resurrectiónem, vitam aetérnam. Amen.
Instead of the Niceno-Constantinopolitan Creed, especially during Lent and Easter Time, the baptismal Symbol of the Roman Church, known as the Apostles’ Creed, may be used.
I believe in God, the Father almighty, Creator of heaven and earth, and in Jesus Christ, his only Son, our Lord,
At the words that follow, up to and including the Virgin Mary, all bow.
who was conceived by the Holy Spirit, born of the Virgin Mary, suffered under Pontius Pilate, was crucified, died and was buried; he descended into hell; on the third day he rose again from the dead; he ascended into heaven, and is seated at the right hand of God the Father almighty; from there he will come to judge the living and the dead. I believe in the Holy Spirit, the holy catholic Church, the communion of saints, the forgiveness of sins, the resurrection of the body, and life everlasting. Amen.