"Christus vincit! Christus regnat! Christus imperat!
Exaudi, Christe.
Ecclesiae Sanctae Dei salus perpetua. Redemptor mundi, Tu illam adjuva!
Exaudi, Christe.
Benedicto summo Pontifici et universali Papae vita! Salvator mundi, Tu illum adjuva!"
The motu proprio 'Summorum Pontificum' is now online in Latin, here, with the papal letter in English, here. Commentary and translations also available from Fr Z., here.
Deo dicamus gratias!
Let's hope that the term 'extraordinary' when referring to the 1962 Missal will be as broadly applied as it is when referring to 'extraordinary ministers of Holy Communion'!!