Your examiners are interested in your work. They have to be, or they just wouldn’t be there.
Your examiners are prepared for the viva. Like you, they have to get ready to do this particular event.
Your examiners are experienced. They are academics – even examiners at the start of their academic career have training, guidance and support to do the job well.
Your examiners are human. They’re just people, like you. They know the viva could make you nervous and they know you want it to go well.
They want it to go well too – and given the work that you’ve done and the work your examiners do, your viva most likely will go well.