Christus factus est pro nobis obediens usque ad mortem, mortem autem crucis. Propter quod et Deus exaltavit illum et dedit illi nomen, quod est super omne nomen.
Christ became obedient for us unto death, even to the death, death on the cross. Therefore God exalted Him and gave Him a name which is above all names.
This text is specifically from the Palm Sunday Mass, Good Friday Liturgy, and the Holy Saturday responsory for the office. It’s also used for the Exaltation of the Holy Cross, and on Holy Thursday in the EF.