SpiritLedEd:

While I cant do that if that friend of mine refuse to step into a service in church. Anyway, I do appreciate your advice.

Anyway, why did I suggest that the battle took place before earth was created:

Genesis
1:1 In the beginning God created the heavens and the earth.
1:2 Now the earth was without shape and empty, and darkness was over the surface of the watery deep, but the Spirit of God was moving over the surface of the water.

According to my pastor from a previous sermon, I recall that he used the verses above to indicate the battle. '..the earth was without shape and empty' The 'was' used here can also be translated as 'became' from the original scripture. And this became, from a bible interpretation's viewpoint, could be/ is most probably a result from the battle.