I really enjoy the minimal facts of the resurrection coined by Dr. Gary Habermas. It's not a perfect argument by any means, but its simple and can be memorized without much trouble. And there's a range of about 4 to 12 different facts, so everyone can kind of customize their own presentation.
I usually use:
- Empty tomb (Habermas doesn't always include this one)
- Conversion of Skepitc Paul
- Conversion and martyrdom of Skeptic James (Jesus' brother)
- The fact that historians agree that the disciples legitimately believed to have seen the risen Jesus
Some say that the minimal facts alone are not enough, and I have no problem granting that. But its still helpful nonetheless!