Do you know what this prayer is?

I was in the park this afternoon, viewing the last of the crosses to arrive.  These crosses each have phrases from the Lord's Prayer, and if you start at the log cabin chapel, the crosses will lead you through the park and through the prayer.
As I stood on the path, admiring this last cross, two children came running around the bend toward me, shouting exuberantly, "there's another one!".  Then they raced on to find the next cross.  Behind them, their grandparents followed, and finally caught up with the children at the "Amen".  From a distance, I heard the grandfather ask, "Do you know what this prayer is?"
I smiled, and wondered what he would tell them.