You need to be really fast with your commands, like really fast if you want a no damage without using Invincibility. After casting aura, to Rinoa, if the limit break arrow doesn't appear the first time her command window opens, it's already a fail for no damage as you'll surely be hit with a meteor before you can kill it.
![](https://i.ytimg.com/vi/d_VQHVEvkfM/maxresdefault.jpg)