The following links provides access to a video that I cobbled together which contains depictions of religion, both human and alien, as portrayed in Babylon 5.
N.B. this is a DVD quality video file and therefore is a hefty download which might be better avoided if you are paying for your data connection.
There is also a reduced resolution version which is aimed at devices with small screens.
B5 Religions small screen version
Of course, the story is written by a human and therefore what we are seeing is an introspective view. There are three main alien species portrayed on B5.
Their society is split into three castes; warrior, religious, and worker. The ambassador on board B5 is Delenn, a member of the religious caste who believe in Valen, a Minbari not born of Minbari, a spiritual leader who lived one thousand years ago. The emphasis is not on worshipping a god but on living life according to spiritual principles. In this respect it is similar to Buddhism. Meditation and contemplation are the order of the day. Religious education is by the neophyte and master system. Their religious ceremonies are conducted with grace and decorum.
They are portrayed as a decadent imperialistic society reminiscent of imperial Russia or France. They have a pantheon of gods along the lines of ancient Greek or Roman societies. Their religious ceremonies are a riot of music, food, and drink. Materialistic rather than spiritual. Modern equivalents might be Hinduism.
A multi-faith culture. The ambassador, G'Kar, is a follower of J'Quan a prophet who lived one thousand years ago and wrote his thoughts in a book which is copied by hand from one believer to the next. In this respect the religion is similar to Islam or Judaism. The timing of one of their major ceremonies is dictated by the sun rising at a particular site which also has various equivalents.
The human captain's response to the challenge of demonstrating earth's dominant belief system is a bit of a cop-out since he takes an inclusive approach and demonstrates the diversity available which probably explains why he got replaced in the second season. On the other hand, due to a series of unlikely events he ends up being the original prophet of the Minbari religion. Perhaps I should have mentioned "spoiler alert".
Now, the fun part is to match them up with the different pagan paths !
On a more serious level we could be asking more interesting questions such as :-
Does a religion require a god ?
Does a religion require a holy text ?
Are multiple gods simply different faces of one god ?
Are all religions different aspects of one religion ?
Should we celebrate or respect life ?