During days when it is not possible for Catholics to attend Holy Mass or receive Holy Communion, a very ancient custom is to make a Spiritual Communion. In this prayer we express our desire to receive Our Lord spiritually — not with the same graces as a Sacramental Communion — but nonetheless a good and pious custom in times of necessity. Here are two forms that can be used:

“My Jesus, I believe that you are present in the most Blessed Sacrament. I love You above all things and I desire to receive You into my soul. Since I cannot now receive You sacramentally, come at least spiritually into my heart. I embrace You as if You were already there, and unite myself wholly to You. Never permit me to be separated from You.”

or

“I wish, Lord, to receive you with the purity, humility and devotion with which your most holy Mother received you, with the spirit and fervour of the saints.”