Some expressions of Christianity are what is termed dualist: they are concerned with the adversarial nature of a divine Lord of good, in the form of God (and the Trinity), and a diabolical lord of evil, in the form of the devil, Satan, Lucifer, or the adversary, to give it a few of the more common names it is known by. All, or almost all are dualist in at least a purely moral sense – there is good and evil, even if there is not a personification of evil in opposition to a personification of good.
Quaker non-theists take a range of positions on the nature of that which our theistic Friends generally (and some non-theists) call ‘God’. Generally speaking, those who consider themselves non-theists (or who might be analytically classified as such) do not accept the idea of God as an entity with personality or personhood, but we recognise something in ourselves which we identify to some extent with what others call ‘God’.
Likewise, theistic Christian Quakers (neither Christianity nor theism inevitably follows from the other in practice, among Quakers) have a range of views about the devil, though among liberal Friends the identification of it as an adversarial persona with true power in opposition to God is relatively unusual. Yet we all recognise the concept of evil, that there are acts that are evil, that we all have the potential for evil within us – just as we all have the potential for good, and that we all have ‘that of God’ within us. We, Quakers, tend to be dualists to that extent, even if the degree of Christian dualism found in some other churches is (in my experience) extremely rare.

