In many engines, if the timing belt breaks while the engine is running, the valves can get bent from hitting the piston. This is because the valves are open when the piston is at the top of its stroke, and if the timing belt breaks, the valves will not be able to close in time to avoid being hit by the piston.
However, the 1992 Honda Civic 1.5 16-valve engine has a feature that helps to prevent the valves from getting bent if the timing belt breaks. This feature is called a "valve spring retainer keeper." The valve spring retainer keeper is a small metal clip that holds the valve spring retainer in place. If the timing belt breaks, the valve spring retainer keeper will prevent the valve spring retainer from moving out of place, and this will help to keep the valves from getting bent.
So, in the case of the 1992 Honda Civic 1.5 16-valve engine, the valves are not likely to get bent if the timing belt breaks. However, it is still important to replace the timing belt as soon as possible if it breaks, because the engine will not be able to run until the timing belt is replaced.