This Weakaura will add bars that show whenever a spell that is reflectable is targeting you.
This Weakaura isn't a replacement for common knowledge of what spells is reflectable and not, it is recommended to look up and remember the best spells to reflect or deflect to either help mitigate a lot of damage or reflect a heavy dot / spell back to the enemy.
List of spells that works with spell reflect: https://tinyurl.com/ReflectGuide
More updates may come.