Suggest a few moments of silence, where you can choose to pray, or not, during that time. People pray in different ways according to their religion, or lack there of and some may feel alienated at a time when they should feel closer to their own deity.

I was at a couple of teamster meetings a few years ago. They were trying to sell the union to our company. At the end of a meeting, they have everyone hold hands in a circle and say a prayer. I stayed out of it the first time. The second meeting was so rabble rousing that I got caught into it. At the end, I joined the circle and said the prayer. Looking back, I think about how easy it is to manipulate and get manipulated. I am more proud of myself for staying out of it.

Do what you feel comfortable with. Step out during prayer, stay but don't pray, or pray. I usually stay and not pray, unless it's a new religion but then I am participating for the cultural experience and knowledge.