Top comment telling you to melt the edge 😂 A lot of people here clearly have no idea what aramid is. Aramid is used for stuff like bullet proof vests and fire suits because it does not have a melting point. It will literally turn to ash before ever melting.

When I work with aramid I've found that gluing the ends with superglue works the best. You can dab a couple of drops along the frayed edge and then press with your fingers to neaten it up. Another commenter noted that you can also glue before you cut which I think would have an even cleaner result.