I did a search here and this was the only thread about deleted scenes (with them as topic) that came up....
I watched the X-men 1 dvd deleted scene where Storm teaches the students about christianity in the roman world. She asks how christianity got accepted and a student answered: "The emperor became one?" And she says it's correct.
This is actually not true...
She refers to Constantine (she mentions the name) and his verdict in 313 in Milan where he accepted christianity as religion.
BUT
The emperor in 311 was Galerius and he proclaimed just before he died that the christian religion is officialy recognised, making it also illegal to be prosecuted.
So, it wasn't Constantine that "accepted christianity", that was Galerius, Constantine confirmed it in the verdict of 313 together with all the other religions there were (see Lactantius, De mortibus persecutorum 48.2).
This emperor was believed to be christian, though it is curious to why he only got baptised just before he died.
Saying that Constantine was the one who gave the final acceptence is wrong too, since between 361 and 363 the emperor named Iulianus prosecuted christians again and promoted the neoplatoism.
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Just me nitpicking 🙂