If you want to make a Narcissist loathe you be better at literally anything than them. Above all else, Narcissists are socially competitive to the point of unhealthy and ridiculously unnecessary obsession.
If you want to injure a Narcissist’s ego, understand the process is incredibly simple.
Make more money than them or be more personally and or professionally successful. Be better at literally anything — sports, music, art, flirting, or at simply being a competent person.
If you are smarter on an IQ scale, the low EQ Narcissist is sure to despise you.
Your friends will be people they seek to estrange from you to “capture”.
The more likable and kind you are, the more you should expect a narcissist to accuse you of being some kind of insufferable fraud. They spend so much time projecting errantly that everyone has a personality type like their own that they are likely to claim someone is hateful who has a heart and mind made of pure gold.
If you are considered a gifted and talented person or student, understand anyone who has a narcissistic temperament is likely going to strive to make you look socially like some kind of fool or an idiot.
Correcting them in public or in private thinking you are being helpful while acting socially collaborative will be the most likely first sin you will personally commit.
But a Narcissist will not require you to do or to say anything to them or about them for them to despise you to your core as their rival. All one actually has to do to be loathes is to look straight at a narcy person and smile.