The canticle Though He Was in the Form of God (The Song of Christ’s Glory) was used in the Roman Liturgy of the Hours in Evening Prayer on Saturdays.
Though he was in the form of God,
Jesus did not count equality with God a thing to be grasped,
but emptied himself, by taking the form of a servant,
being born in the likeness of men.
And being found in human form,
he humbled himself by becoming obedient to the point of death,
even death on a cross.
Therefore God has highly exalted him
and bestowed on him the name that is above every name,
so that at the name of Jesus every knee should bow,
in heaven and on earth and under the earth,
and every tongue confess that Jesus Christ is Lord,
to the glory of God the Father.
Glory be to the Father, and to the Son, and to the Holy Spirit:
as it was in the beginning, is now, and will be forever. Amen.
Source: The Holy Bible: English Standard Version, Philippians 2:6-11
See also: https://player.fm/series/divine-office-liturgy-of-the-hours-of-the-roman-catholic-church-breviary/aug-06-evening-prayer-for-saturday-of-the-18th-week-of-ordinary-time