We need to pray for the preachers of the gospel, that God should give us the strength and encouragement to keep spreading the goodnews.So, that we will all be rewarded on the last day.
From 1cor 9vs 17 : If I preach voluntarily, I have a reward; if not voluntarily, I am simply discharging the trust committed to me.

Also, we need to pray for the new converts, that they remain in faith until Jesus christ comes.
John 4:36:
Already the reaper draws his wages and gathers a crop for eternal life, so that the sower and the reaper may rejoice together.