According to the Apostolic Penitentiary, a partial indulgence is granted to those who on the feast of any Saint recite in his honour the oration of the Missal or any other approved by legitimate Authority.
R. And let my cry come unto thee.
Let us pray.
O God, Who didst use thine holy Apostles Simon and Jude to make known unto us thy Name, grant unto us so to profit by their doctrine as to do honour to their everlasting glory, and so to honour that glory as to gain profit to ourselves.
Through Jesus Christ, thy Son our Lord, Who liveth and reigneth with thee, in the unity of the Holy Ghost, God, world without end.
I would assume that this indulgence also attaches to the recitation of the Troparion and Kontakion of the Saint of the day in the Eastern Calendar which are in my Eastern Rite post at 00.06.