So, if war is hell on earth, and thruth is the first victim of war, then one might say that in hell there is no truth. So to fight of hell one might say that we should seek out the truth and fight off lies.
It is certain that a few isolated Christian writers explicitly argued against the spherical Earth. Lactantius (245–325) calls it "folly" because people on a sphere would fall down; Saint Cyril of Jerusalem (315–386) saw Earth as a firmament floating on water; Saint John Chrysostom (344–408) saw a spherical Earth as contradictory to scripture; Severian, Bishop of Gabala (d. 408) and Diodorus of Tarsus (d. 394) argued for a flat Earth; and Cosmas Indicopleustes (547) called Earth "a parallelogram, flat, and surrounded by four seas" in his Christian Topography, where the Covenant Ark was meant to represent the whole universe.
Wikipedia - Flat earth
The geocentric model was generally accepted at the time for several reasons. By the time of the controversy, the Catholic Church had largely abandoned the Ptolemaic model for the Tychonian model in which the Earth was at the center of the Universe, the Sun revolved around the Earth and the other planets revolved around the Sun.As such it would seem that many great men have been persecuted for their ideas by people who did not approve of them. But not only great men, but ordinary people too...
Wikipedia - Galileo Galilei
For several centuries, dominantly Christian societies believed that Satan was acting through human and animal servants. These beliefs can be seen as a reaction to emerging alternatives to the Christian hierarchical order, such as the worldly knowledge and cultural practices brought into a relatively backward Europe from the Middle East by those returning from the Crusades. Over the centuries, there were extensive efforts to root out the supposed influence of Satan by various measures aimed at the people that were accused of being servants of Satan. People suspected of being "possessed" by Satan were put on trial.
Wikipedia - Witch-hunt
The Spanish Inquisition was the Inquisition acting in Spain under the control of the Kings of Spain. This Inquisition was the result of the reconquest of Spain from the Muslims and the policy of converting Spanish Jews and Muslims to Christianity. The Inquisition was an important tool in enforcing the limpieza de sangre ("cleanliness of blood") against descendants of converted Jews or Muslims. It was also used as a tool to punish and eliminate homosexuals.
Wikipedia - Spanish inquisition
I don't know about you, but I wouldn't enjoy treatment like that just because I'm not a believer. Maybe it was considered to be the truth then, but what about now? Does anyone honestly believe that witches exist and that we can throw people in the lake to see who floats and who sinks? Wasn't it then a lie all along? And today? Is AIDS a punishment on homosexuals from god? Maybe that's also a lie...
So what we know (or think we know) is that religion has spread many lies throughout time. Many atrocities has been committed in the name of belief, and continue to happen even today, as shown by the situation in the middle-east and the sarin attack by the Aum Shinrikyo cult on a Tokyo subway in 1995.
In other religions, such as Hinduism, reincarnation is a central part and the goal is to escape the cycle of death and rebirth. What could be worse than to be reincarnated into a world full of lies and warring? Would that not be a hell in itself? Perhaps it's the release from that hell, the release from the death-rebirth cycle, that so many religions speak of. A release from a world of hostility partly caused by the religions themselves..?
Who knows, this is all just a "load of dingo's kidneys" as someone smarter than me would have said.