2000 Toyota Camry Engine goes off when I apply brakes and i

Hi I have a question about my Camry. It shakes when I apply brakes and also its engine goes off, I can easily again start it and it does start fine but when I slow down and apply brakes it goes off.

Please let me know what kind of problem it might be and how much expense need to be used to get such kind of repairs.
I'd appreciate it