On Sundays and at First-Class Feasts, the celebrant approaches the altar for the Nicene Creed, genuflecting before entering the chancel. [For weekday and other masses, Maundy Thursday, and the Vigil of Easter, the Creed is omitted.] During the Creed, all face the altar. For the Creed, genuflection is made at “and was made man” and a bow at “who with the Father and the Son is worshiped and glorified,” as indicated in the Altar Book. The celebrant then genuflects and retires to sit in the sedilia for the Hymn of the Day.
The Western rite does provide that the genuflection begin at "and was incarnate" but this seems to suggest an unseemly confusion between Jesus' incarnation and his state of humiliation.