The Scout promise, in the UK, which every Scout must make upon being invested, is:

"On my honour,
I promise to do my best
To do my duty to God and to the Queen
To help other people
And to keep the Scout Law"

I believe variations exist for people of different religions.

When I was a Scout, the leader always used to get the promise wrong. It became a running joke, and one of the many fond memories which I have of 1^stAlconbury Scout Troop. (most of the others are from camps, but that's a story for a different node)