Look into Set Global Time Dilation node. It slows down the whole game to the value you set; 1 normal speed, 0 stop, >1 increase speed, etc. And it shouldnt affect HUD so you can make use of it i believe.
I dont know how you set things up but i guess so. Basically you set the time dilation to 0 when you trigger the text, then set it back to 1 when that event ends.
Btw, i’ve heard people say that time dilation doesnt affect physics simulated objects so i suggest doing some tests to make sure it works for you in every possible condition in your game.