Well for that you could use if ($cid == $activecid)
Code:
on *:OP:#: {
if (($opnick != $me) || ($nick == X) || (# == $active) || (%away.system == on)) return
if ($cid == $activecid) echo.green $nick gave you op in #
else echo.green $nick gave you op in # ( $+ $lower($network) $+ )
}