It's an uncertain topic. Firstly there are things you shouldn't assume:
1 - They are made of endless energy
2 - They have a soul
Now there is this fact, God is the Light and Amara is the Dark. They are the opposite of each other and reality is dependant on their co-existence. They are not beings with souls or energy. They are concepts. If one overcomes the other, they both cease to exist at the end. And there is not an afterlife for these beings unless writers make so.