St. Alphonsus Liguori had a great devotion to Jesus in the Blessed Sacrament. He composed a series of 30 reflections to be used during regular visits. We've shared a few of his prayers here. The full text of the visits is available in the book, Visits to the Blessed Sacrament and to Most Holy Mary by Fr. Dennis Billy, C.Ss.R. (Ave Maria Press).
Visit to the Most Blessed Sacrament
By St. Alphonsus Liguori
My Lord Jesus Christ, out of love for us all, You stay night and day in this Sacrament, full of compassion, waiting for, calling and welcoming all who come to visit you. I believe that you are really here in this Sacrament. I adore you in your greatness. I thank you for all the wonderful graces you have given me. But I thank you especially for having given me yourself in this Sacrament, for having asked your own Mother to mother me, for having called me here to talk to you.
I am here before you today to do three things: to thank you for these precious gifts, to make up for all the disrespect that you receive in this Sacrament from those who offend you, to adore you everywhere in the world where you are present in this living bread but are left abandoned and unloved.
My Jesus, I love you with all my heart. I know I have displeased you often in the past — I am sorry. With your help I promise never to do it again. I have been weak and have sinned, but I consecrate myself to you completely. I give you my will, my love, my desires, everything I own. From now on do what you please with me. All I ask is that you love me, that you keep me faithful to the end of my life. I ask for the grace to do your will exactly as you want it done.
I pray for the souls in purgatory — especially for those who were close to you in this Sacrament and close to your Mother Mary. I pray for every soul hardened in sin. My Savior, I unite my love to the love of your divine heart, and I offer them both together to your Father. I beg him to accept this offering in your name. Amen.
Act of Spiritual Communion
My Jesus, I believe you are really here in the Blessed Sacrament. I love you more than anything in the world, and I hunger to feed on your flesh. But since I cannot receive Communion at this moment, feed my soul at least spiritually. I unite myself to you now, as I do when I actually receive you. Never let me drift away from you. Amen.
Source: Living Redemptorist Spirituality: Prayers, Devotions and Reflections (North American Commission for Partnership in Mission, 2009)