Editor gave me five days to revise paper – chance of acceptance?
Unless there are some general reasons to impose a deadline on your paper, such as that it is intended for a special issue, I would strongly guess that your paper is practically accepted and the editor only wanted you to apply some minor changes. I only ever heard of such short deadlines when the only things that needed to be changed were minor and quick to do.

If the editor expected you to present changes and arguments to sway the third referee’s opinion, they would have given you more time. If the editor had decided to follow the third referee’s recommendation, they would have rejected the paper immediately and not further waste your and their time with it.