Empaths see somebody experience an emotion or mood and they feel it themselves. Narcissist see somebody experience an emotion and they feel the exact opposite of that person.
Other Person, animal, or plant Empath
Joy Joy
Sadness Sadness
Safe/peace/relaxed Peace/relaxed/safe
Stressed Stressed
Other person, animal, or plant Narcisisst
Joy Anger aka envy
Peaceful/safe Agitated, Stressed
Sadness Happiness/Joy
Stressed Peaceful/Fulfilled