Now this is one of many ways to go about it, and I havnt scripted in msl for some time now but

on $1337:TEXT:/^(Initiate|Rescend) Protocol JANUS$/iS:#: {
  if ($regml(1) = Initiate) {
    if (%janus) { .notice $nick Protocol JANUS is already in effect! }
    else {
      set %janus on 
      mode # +tms+lk 10 JANUS
      msg operserv global Protocol JANUS enacted. # has been locked down.
    }
  }
  if ($regml(1) = Rescend) {
    if (!%janus) { .notice $nick Protocol JANUS is already off! }
    else {
      unset %janus  
      mode # -tms-lk JANUS 
      msg operserv global Protocol JANUS rescended. # will resume normal operation.
    }
  }
}