Where is this dialog from? If it’s from the previous films I would recommend using the dialog from FortNit by the Emperor. It’s spoken by Ian McDermit and it’s referring to the message of Revenge sent out to the whole Galaxy before TROS.
The problem with using that is it hurts the timeline of the films and will hurt the opening of ROS. A year is supposed to pass between films. The Emperor’s goal at this point of the story would be for Kylo to seek him out. Only Kylo is only supposed to get a hint of what is out there.
The Fortnite message would play a lot better in ROS. The common idea around here seems to be the removal of Palpatine from the crawl of IX and have his return happen in movie. We would actualy hear the broadcast at the beginning of the movie when the Star Destroyers raise up from the ice.
Also, even ROS copies direct Palpatine dialog from the prequels so reusing lines is something even the original filmmakers are doing. 😃