This WeakAura displays when someone in your group, raid or yourself casts a mass resurrection spell.
Works for all languages.
Tons of help from the official WeakAuras Discord and asakawa.
Changelog:
12/8/18 Updated to a TSU. Should catch more cancelled casts.
9/8/18 v1.4 Updated code for LUA changes in BfA. Thanks @Yhal
6/21/17 v1.3 Fixed a bug generated by 7.2.5 that caused the name text to be incorrectly displayed. Thanks, @thedanisme
3/2/17 v1.2 Fixed a bug where the bar would not display when cast by a member outside of your party while in a raid.
3/2/17 v1.1 Added options in On Init to hide the bar when you're alive or to always show it regardless when your character is in a healer specialization.