EWTN Catholic Q&A
Question from Anonymous on 10-17-2017:

I have celiac disease and I am unable to receive communion. Is there a prayer that I can say to myself while everyone else is going up for communion? A visiting priest told me to contact you for a prayer. Thank you in advance.

Answer by Judie Brown on 10-27-2017:

Here is an article about celiac disease and Holy Communion: http://www.hprweb.com/2013/06/celiac-disease-and-holy-communion-a-medical-and- spiritual-dilemma/

As far as a prayer is concerned, we could not locate one.