I'm surprised that it's not covered in your training materials
generally you treat it as second order concerns to flying the aircraft first. Then pull back one engine at a time (never grab all throttles) while observing the engine parameters. Depending on the manufacturers experience and recommendations, if the parameters are stable you may advance the throttles and observe. On some engine models the surge may be temporary in nature associated with the specific short time aero conditions, while in other models it may signify a more permament damage to the engine.