Pause player OnTrigger Enter while voiceover plays, then releases player.

You could just disable the player controller;

 private void OnTriggerEnter(Collider other)
 {
     var player = other.GetComponent<MyPlayerController>();
 
    if(player != null)
    {
         player.enabled = false;
     }
 }

Then enable it again when your voice over has finished.

Thank you, you'll have to forgive my follow up but how do I set the time? I was going to see how long the audio clip was then match that up to how long the player would be stuck in the trigger. also I'm not sure how I would tell the script to re-enable the player to move after the voice over has been completed, an if statement? ..I can follow the logic but yes I'm pretty new to C#