One has to wonder why you would want to!
However, religious belief does gradually seem to be declining in the world, so it seems difficult to try and stop Atheism growing.
Answer 2:
Atheism spreads when people know they can believe whatever they want to believe and also choose not to believe or be a part of. And atheism spreads even faster when there isn't much forcing people to believe in a certain way. Look at Islam and Judaism. They have very aggressive rules about how one should believe. Not conforming to those criteria could mean expulsion, community detachment and even death. You won't find many atheists there. But then look at christian communities, where there is a lot of freedom in what and how to believe. Someone who acknowledges to be gay or athiest doesn't really face harse consequences. You find many atheists here.
Atheisms is also directly related to our dependency on technology. The more advanced our understanding on nature becomes, the more we rely more on technology and science than on God. As you can see people is still debating the big bang theory.
So how do you prevent it !? The solution is to teach your children to be god fearing.
Squash them
The ideal way to prevent people from spreading any infectious disease would be to place them in a hospital and treat them, until they are cured.
To grow bamboo in your garden without it spreading uncontrollably, you can plant it in containers or install a barrier underground to prevent its roots from spreading. Regularly prune and maintain the bamboo to control its growth and prevent it from spreading beyond desired boundaries.
To prevent Communism from spreading.
People are immunised to prevent the spreading of disease
By covering your mouth with with the inside of your arm.
We can cover our food to prevent the housefly from landing on the food and contaminating the food.
benign
By spreading water
You can prevent weeds from your neighbor's yard from spreading into your own yard by creating a physical barrier like a fence or installing a barrier underground. Regularly mowing your lawn and pulling out any weeds that do appear can also help prevent them from spreading. Additionally, you can use weed killer or herbicides along the border of your yard to further prevent weed growth.
Atheism is a noun.
There are no prophets of atheism.