If I were dying, or lost my job, or had a bereavement; I would find any one of these to be incredibly comforting:

May the force be with you

Live long and prosper

Here’s looking at you kid

My mama always said life was like a box of chocolates. You never know what you’re gonna get

You either die a hero or you live long enough to see yourself become the villain

Cowabanga

Apes together strong

If you find yourself alone, riding in the green fields with the sun on your face, do not be troubled. For you are in Elysium, and you’re already dead.

You have my sword, and my bow, and my axe.

Why do we fall sir? So that we can learn to pick ourselves up.

I live my life a quarter mile at a time.

I’ll be back

Which would be worse, to live a monster or to die a good man

The most comforting thing you can generally offer someone is presence and acknowledgment in my experience as an atheist nurse. The whole point of platitudes being looked down on is that they’re generally seen as insincere.

Comforting people with your voice is a form of magic and atheists don’t believe in magic, so they haven’t developed any incantations.