What to do?

[Licht]

Or is the love of the existence all I need?

That's exactly the only thing you need to stay healthy. Illness (no matter what kind of, also radiation) is just a sign of where the love is missing. So stay in love to yourself and in love to everyone and everything and I promise you don't have to worry about anything. A lot of people say that sounds to easy, stay in love and everything will be allright.
But remember: you are the creator of your own world, so if you create love and health, the only things which will encounter your life will be love and health. So don't fear the radiation, be Love.

Love is the answer for every problem in the world, you just have to believe.

In Love, Licht