Life is a maze...there's always something to do something to anticipate, don't waste it on pointless drama, it's just a small ripple, when you rise above it, you'll see there are plenty more cups of water there, still and calm. someone once told me that.
The best response to a narc is no response! If you must respond, show no emotion... This can be very difficult, but it will deprive him of what he wants most... A narcissistic payoff from your reaction/response.