Dark Templar Backstab Defense
Submitted by nodnarb

If you're playing teams and your protoss with at least one terran teamate, this strategy will provide you a little security. If you suspect your terran ally of preparing an against you, build about 6 dark templars. The easiest way for terran to bs is to marine rush, so this works pretty well. Space your DTs out among his troops. If he asks you what you're doing, say that you're getting defense to protect your guys from air attack. Also have few scouts ready to take out any science vessels.

Now the key to this is timing. You need to make sure he attacks first or else any other teammates will be suspicious. The second he fires a single bullet, unally and turn off shared vision. 6 dark templars should be able to take out a huge amount of marines in a matter of seconds. After doing this, encourage your remaining allies to assist you in destroying his base. He shouldn't even have a chance.