It is there, but some people are blind and under the snare of the devil and can't see it.
Adding to scripture is a sin, GT.
Paul asks who it is, and Jesus tells him. Paul believes in the Lord at that time. Is he saved yet by receiving the Holy Spirit? No.
Jesus tells Paul to enter the city and t will be told you what you must do.
At no time did Jesus ask Paul do you believe me now? Yes Paul do you believe now? Okay then, you are saved. That never happened.
Acts 9:5 "Who are you, Lord?" Saul asked. "I am Jesus, whom you are persecuting," he replied.
6 but get up and enter the city, and it will be told you what you must do."…
There is no "to be saved" anywhere in that passage.
Please stop misquoting scripture.
Then Saul, still breathing threats and murder against the disciples of the Lord, went to the high priestand asked letters from him to the synagogues of Damascus, so that if he found any who were of the Way, whether men or women, he might bring them bound to Jerusalem.As he journeyed he came near Damascus, and suddenly a light shone around him from heaven.Then he fell to the ground, and heard a voice saying to him, “Saul, Saul, why are you persecuting Me?”And he said, “Who are You, Lord?” Then the Lord said, “I am Jesus, whom you are persecuting. It is hard for you to kick against the goads.”So he, trembling and astonished, said, “Lord, what do You want me to do?” Then the Lord said to him, “Arise and go into the city, and you will be told what you must do.”And the men who journeyed with him stood speechless, hearing a voice but seeing no one.Then Saul arose from the ground, and when his eyes were opened he saw no one. But they led him by the hand and brought him into Damascus.And he was three days without sight, and neither ate nor drank. - Acts 9:1-9
http://www.biblegateway.com/passage/?search=Acts9:1-9&version=NKJV