Participating in the fulness of the priesthood of Christ (Introit, Alleluia, Offertory) this holy Pontiff also shared in His sufferings (Epistle). Head of the Church, he trembled not before the prince of this world, and became one of the foundation stones of the Church in the first centuries (Gospel).
He decreed that all bishops should be consecrated by three bishops at least; that clerics should be publicly ordained by their own bishop, and at their Mass of Ordination, they should all receive Holy Communion. He received the crown of martyrdom (Communion), after having occupied the Holy See about ten years, and was buried on the Vatican in 112.
Sacerdotes Dei, benedicite Dominum: sancti et humiles corde, laudate Deum. * Benedicite, omnia opera Domini, Domino: laudate et superexaltate eum in saecula.
O ye priests of the Lord, bless the Lord: O ye holy and humble of heart, praise God. * All ye works of the Lord, bless the Lord: praise and exalt Him above all for ever.
O God, who givest us joy by the annual solemnity of blessed Anacletus, Thy martyr and bishop, mercifully grant that we may rejoice in his protection whose birthday we celebrate.
From the Catholic Encyclopaedia: http://www.newadvent.org/cathen/01446a.htm