Benjamin shall ravin as a wolf; in the morning he shall devour the prey, and at night he shall divide the spoil (Genesis 49:27).
People are free to interpret prophecies as they wish, but the wolf being Paul is farfetched and I definitely disagree that this is what the prophecy means. I presume the idea is that Paul 'devoured the prey' by perverting the Gospel of Jesus Christ and then 'divided the spoils' by tearing apart the church through his doctrine. For those who think Paul was a false apostle, it fits, but that does not make it correct. There are two much more likely events that fulfilled the prophecy.
During the period of the judges, certain members of the tribe of Benjamin acted as ravenous wolves by raping and murdering a Levite's concubine (Judges 19) and then "divided the spoils" by carrying off hundreds of young Israelite women after the ensuing bloody war thanthat nearly destroyed the tribe. (Judges 21:23)
The prophecy may also refer to the Benjamite Saul's defeat of the Amalekites. OnceAfter he defeatedslaughtered them earlier in the day, he despoiled them (in the evening), contradicting the instruction of the prophet Samuel.(1 Samuel 15)
Conclusion: The prophecy of Benjamin as a "ravenous wolf" was fulfilled long before Paul lived. It refers either to the episode of the Levite's concubine and the ensuing war in which the remnant of Benjamin carried off numerous young women from other tribes, or to the Benjamite King Saul wiping out nearly all of the Amalekites and then despoiling them later in the day. Because theThe other prophecies of Gen. 49 deal with tribal histories. Thus, I prefer the first of the two possible fulfillments because it focuses on the tribe as a whole, rather than aa single representative of the tribe. See this question for more details.
The OP asks for resources to address people who think Paul was a false apostle. Here are some possibilities. They also include Paul's own statements defending his apostleship.