You know they're just polygons on your monitor right? They're just a bunch of 0's and 1's with a hissing sound effect, they can't physically harm you, they can't touch you, and they can't jump out of the monitor and attack you.
You're aware that a fear is just an irrational mindtrick right?

Remember, you're several thousand times larger than ANY other spider species in the world, and it's probably more scared of you, than you of it.