How can panentheism be reconciled with Satan?

Some Christians hold that the universe or creation are part of God (panentheism). More often than not, God is said to be both immanent and transcendental in relation to the universe. How can those be accepted if Satan is to be treated as a real entity? While immanence may allow you to say that God pervades being but is external to it, panentheism allows no such move. It would imply there is no "other" in relation to God, only but God and parts of God. And as soon as you introduce parts, you immediately wreck the supposed simplicity of God. I find the idea of Christian panentheism problematic because I can't see how Satan, a part of creation, can exist if he is encompassed by God, implying that God is privated in some way. --- Please be careful not to confuse PANtheism with PANENtheism. Both are very different. Pantheism identifies the universe with God (like Spinoza) while panentheism situates the universe within God, as it were (a bit like immanence, but without being fully distinct). That the universe is created does not contradict panentheism necessarily. The reason I bring this up is because a number of theologians such as Peacocke and Zycinski (the last of which is an archbishop of the RCC) do propose a panentheistic understanding of God because they reject not revelation but neo-scholasticism. They also wish to account for God's immanence in the world given the current science. I'm not sure I agree with them (I can imagine other ways God could be immanent), but this is what's been put on the table. Here's a link to more information .