You can't.
His death is vital to Golden Sun 2.
The only way to save Babi is to hack the game, which is illegal.
The cloak ball is in possession of Babi, go to his quarters after the tournament and he will give it to you if you ask him.
Use the cloak psynergy from the cloak ball (obtained in Babi's room after colossos) and go through the shadows past the guards
Babi Xavier goes by Babi.
Babi
Golden Sun happened in 2001.
Parveen Babi's birth name is Parveen Wali Mohammad Khan Babi.
You need to complete golden sun 1 and transfer the save over to golden sun 2. This will grant the player the "Orb of Force" which has the psyenergy ablity force. This is required to unlock several side areas in the game.
The population of Babi Dół is 223.
FK Babi was created in 1994.
Babi Badalov was born in 1959.
Babi Xavier is 175 cm.
Lamar Babi is 5' 9".