|Mark 8:31 And he began to teach them, that the Son of man must suffer many things, and be rejected of the elders, and of the chief priests, and scribes, and be killed, and after three days rise again  .||Matt 16:21 From that time forth began Jesus to shew unto his disciples, how that he must go unto Jerusalem, and suffer many things of the elders and chief priests and scribes, and be killed, and be raised again the third day.||Luke 9:22 Saying, The Son of man must suffer many things, and be rejected of the elders and chief priests and scribes, and be slain, and be raised the third day.|
|Mark 8:32 And he spake that saying openly. And Peter took him, and began to rebuke him.||Matt 16:22 Then Peter took him, and began to rebuke him, saying, Be it far from thee, Lord: this shall not be unto thee.|
|Mark 8:33 But when he had turned about and looked on his disciples, he rebuked Peter, saying, Get thee behind me, Satan: for thou savourest not the things that be of God, but the things that be of men.||Matt 16:23 But he turned, and said unto Peter, Get thee behind me, Satan: thou art an offence unto me: for thou savourest not the things that be of God, but those that be of men.|
The contradiction here is subtle. Mark says "rise," implying that Jesus will return to life under his own power, while Matthew and Luke say "be raised," implying that it is the power of God which will raise him. This same contradiction appears in Mark 9:31 and Matthew 17:23, but, interestingly, there is no conflict in Mark 10:34, Matthew 20:19, and Luke 18:32 which all have "shall rise."