Car shakes when coming off a hill and stopping at a light in a 2003 a Mitsubishi lancer?

Commonly called hot spots in the rotors. The rotors have been heated quickly because of heavy braking and have actually warped. Consequently, as the rotor turn thru the caliper, the brake friction increases and decreases causing the tire to flex and bounce. The bounce is the shake that you feel. Take the car to a brake shop and have the rotors turned.