Janet Sullivan Whitaker and Max Whitaker have written a song for Eucharist that is at least designed for an assembly. There a some notes held for a long time in the verses that might cause consternation and the 3rd and 5th verse share a different tune to the 1st, 2nd and 4th verses but it may be doable. It is slow 6/8 and is very long.
The text is at spiritandsong where the sheet music can be purchased for download.