With the fear in mind, it’s impossible to just theoretically say these things to ourselves. It’s better to just look at the fear – to observe the fear and understand how it works.
When the mind is able to do that, maybe it understands more and it feels more settled, because of that, then the mind can think in a more rational way that suits the circumstances that you’re in.
The presence of fear makes it difficult for the mind to accept platitudes.
So, don’t try to say something; just observe the feeling.
As far as possible, this is the opportunity to observe the workings of fear (it is going to be very obvious) and as much as you can muster, have an interest to seeing it as objectively as you can.