Hit on the front or rear of the car. Front fenders, if I understand correct, any 1998-2000 Corolla will fit the Prism. In 2001-2002, they switched to a different style front headlamp, that causes issues with fitment. Only part I'm not sure of is the mounting points - I remember reading that a Prism owner had to fabricate new brackets to attach the Corolla fender to his car - but I can't remember if that was for the fender and/or the lamp attachment points. Bumper cover the same way - the earlier Corollas had a similar style to the Prism.
If it is the rear of the car - bumper cover should be a non-issue, but no way to replace the fender on any of the models. That is a welded piece, have to cut off the damaged section and weld in a new one or shape one by hand.