HELP ME! need cinematic help!

I'm designing a cinematic, and i need to make the units invulnerable so they don't get sluaghtered. can someone tell me how? Also, my fade out/fade in happens much later than its order in the trigger.

To make units Invulnerable just use the action:Unit-make vulnerable\Invulnerable.
To make all units Invulnerable just do:
Unit-group-Pick every units in playable map area and do Unit-make Picked unit Invulnerable.
Just don't forget to set them vulnerable again using the same action.
About the fade out, I think you show the trigger, or it will be hard to know whats wrong.