Well, "the gospel is the Power of God unto salvation" would be a good guess except that this is describing one of the benefits of those who believe the gospel and is not either the name of the gospel or expressing the gospel itself.
Gosh, I'm only trying to help those who have lost the gospel. Unfortunately, the Arminian is so set against the TRUTH that they haven't stopped to figure out that they don't have a clue what the gospel IS.
Notice, though, that the acid from our friends is down as they try to figure out what this little grace man is talking about.