As I remember, Protestants believe in a literal 1000 year reign of Christ on earth which will happen after his return. Then they believe that mankind will throw off His rule. Then Satan will be released to rule the earth for a very short time–basically giving the people what they want. And then Christ will crush Satan for Good.
Catholics don’t believe this scenario. As far as I know, Catholics believe the 1000 year reign of Christ means that Christ will reign for a very long time–that this will be be a reign from Heaven–not Christ’s actual presence on earth. I personally believe that Christ’s 1000 year reign is coming to a close. In other words, the world is throwing off the rule of God, and because of this, Satan’s rule is getting stronger and stronger. However, the Book of Revelation says this will last for a short time only before Jesus comes back and destroys Satan’s rule over the earth.
I believe we may be in the beginning of that time period right now. Satan will reign for a short time. But what does “short” mean? Lord have mercy on us during this time. For the scripture says ‘that if the time had not been shortened, no one would survive.’ (Matthew 24:22)