Final answer:
The lines that express the conflict between Satan and God are 'Better to reign in Hell than serve in Heaven' and 'In Heaven, all is well, but here below, all is turmoil and despair.'
Step-by-step explanation:
The lines that express the conflict between Satan and God are:
c) "Better to reign in Hell than serve in Heaven."
d) "In Heaven, all is well, but here below, all is turmoil and despair."
These lines highlight the defiance of Satan towards God and his preference for ruling in Hell rather than serving in Heaven.