How do I stop the Martian from switching the lever back?

Firstly, do you know what the lever does?

What does the lever on the ground do?

 

Have you tried stopping the martian by standing in his way?

Have you tried to pull the lever and then run really fast to the pyramid

before the martian gets a chance to switch it back?

 

Just tell me how to stop the Martian! (MAJOR CHEAT WARNING!)