KISS.
First you identify that there is a loss of thrust. This can be done via various methods depending on phase of flight and therefore thrust levels. You scan the engine instruments to determine the type of failure; e.g. flame out; severe damage, separation. This assumes it not a manual shutdown due engine parameters. + you will know if it is a fire.
Then when the engine malfunction is contained and QRH executed and complete I suggest you check RECALL and analyse what is residual. Check the system lights that are associated with the engine shutdown and discard these. Anything left over is another problem and needs dealing with.