How we live our life as a Christian can... affect our status with The LORD at His future coming. Make no mistake about that.
Remember the "five foolish virgins" of Matthew 25, and the "unprofitable servant" of Matthew 25?
Luke 12:45-48
45 But and if that servant say in his heart, "My lord delayeth his coming"; and shall begin to beat the menservants and maidens, and to eat and drink, and to be drunken;
46 The lord of that servant will come in a day when he looketh not for him, and at an hour when he is not aware, and will cut him in sunder, and will appoint him his portion with the unbelievers.
47 And that servant, which knew his lord's will, and prepared not himself, neither did according to his will, shall be beaten with many stripes.
48 But he that knew not, and did commit things worthy of stripes, shall be beaten with few stripes. For unto whomsoever much is given, of him shall be much required: and to whom men have committed much, of him they will ask the more.
KJV
A believer on Jesus Christ being cast to the "outer darkness" with the unbelievers at His coming, like Jesus showed with the "unprofitable servant", does not mean they are sent into the lake of fire. The "outer darkness" will be a place outside... the gates of the beloved city on earth, as shown in Revelation 22:14-15. They will stand in judgment throughout Christ's future "thousand years" reign, and be taught their error, as per the Book of Ezekiel.