I would say:
1. Believe in a single, real God
2. Belief that Jesus existed, came to Earth and died on the cross, in order to save sinful man.
3. Belief that Jesus rose from the dead in order to prove his divinity
4. Accepting and repenting of one's personal sins and putting faith in Jesus Christ.
I like to keep things as simple as possible, in order to make it easier for people to understand Christianity. I also like to be as universal as possible, providing it does not contradict the Bible. I also think if somebody has NEVER had the opportunity to believe in Jesus, e.g. if they have neer even heard of Jesus, then they will be judged on either what they would have believed if they could, or their faith according to the light that they have known.
Remember that God doesn't actually want to send anyone into the Devil's hands, so if he can find a way to save them he will. If they are unsaved however, he will be forced to punish them according to his own laws.