When you're reading this
As soon as the lightning connects, I turn and run. The tanks have so much threat built up that you don't have to worry about holding agro. Just high-tail it to the appropriate pillar and hang out. If you're quick, you'll have enough time to adjust and reposition if necessary.
[*] Always be aware of where your healers are and which direction they are moving (also, ideally, what ability they are casting and how far into the cast they are
As a healer, nothing is more annoying than a tank sprinting off in the other direction at half health while I'm trying to get them back up. In my experience it doesn't often cause wipes, but it sure is aggravating.