First note:

If you want a script to do something only when you're opped, you can use @ in the event. It will only trigger if you are an op.

Example:
on @*:text:*:#: { }


Second:

Code:
on *:text:*:#: {
  if ($mid($me,2,$calc($len($me)-2))) isin $1-) {
    .echo -a $timestamps User $nick has mentioned you in $chan saying $1-
  }
}


NOTE: This is for only if you use a symbol on both sides of your nick and you want to be notified when your nick is used with or without those symbols.

It will work when someone types:

|raZOR|
-raZOR-
_raZOR_
raZOR
|raZOR
raZOR|

etc.

I added "saying $1-" because you usually want to know what someone said if they used your nick.