Dodging

If you use your tactical power (teleport/roll/dash/block) just before an attack lands at you, or at your feet, you will avoid the damage entirely. Of course, it’s better not to be in a red area. But with the right timing, you can dodge mostly anything (including a red dragon’s breath, for which you need to dodge twice with proper timing). There are a couple of things which cannot be invulnerability framed at all though.