11 as you help us by your prayers. Then many will give thanks on our behalf for the gracious favor granted us in answer to the prayers of many.

Read 2 Corinthians 1:11 Using Other Translations

Ye also helping together by prayer for us, that for the gift bestowed upon us by the means of many persons thanks may be given by many on our behalf.
You also must help us by prayer, so that many will give thanks on our behalf for the blessing granted us through the prayers of many.
And you are helping us by praying for us. Then many people will give thanks because God has graciously answered so many prayers for our safety.