And when Saul had come to Jerusalem, he tried to join the disciples; but they were all afraid of him, and did not believe that he was a disciple. 27 But Barnabas took him and brought him to the apostles. And he declared to them how he had seen the Lord on the road, and that He had spoken to him, and how he had preached boldly at Damascus in the name of Jesus. 28 So he was with them at Jerusalem, coming in and going out. 29 And he spoke boldly in the name of the Lord Jesus and disputed against the Hellenists, but they attempted to kill him. 30 When the brethren found out, they brought him down to Caesarea and sent him out to Tarsus.31 Then the churches throughout all Judea, Galilee, and Samaria had peace and were edified. And walking in the fear of the Lord and in the comfort of the Holy Spirit, they were multiplied. Acts 9:26-31
It says Barnabas brought Saul/Paul to the apostles, Paul gave them his testimony of seeing the Lord and how he had preached at Damascus in the name of Jesus. Then it says Paul stayed with them at Jerusalem, coming in and going out. When he spoke with the Hellenists in the name of Jesus and they then attempted to kill him the brethren helped him escape by bringing him down to Caesarea and sending him to Tarsus. Then the churches throughout all Judea, Galilee, and Samaria had peace and were edified. And walking in the fear of the Lord and in the comfort of the Holy Spirit, they were multiplied.
It shows that the Hellenists were is sharp disagreement with the gospel message of Paul and the Apostles. It does not show a split between the apostles and Paul, on the contrary it shows their unity and peace.