User blog comment:JakePT/New Information from PSM3/@comment-743796-20110422153546/@comment-743796-20110422183330

assuming everyone's still alive at the point you choose two squadmates and the rest hold the line, you'd want to take Miranda and a weaker squad member (ideally Tali or Mordin, as they have the greatest chance to die, but better to send Mordin back to the Normandy to protect the crew, he'll live if loyal 100%). As for the cutscene, it only happens once Shep chooses to nuke the station.