Can I have permission over you?

Using Luke 22:31-34, 1 Peter 5:8 as the case study

1. Why did Jesus give Satan the permission to have Peter?

2. What if Jesus had not prayed for Peter?

3. When the Bible said Jesus is our advocate to God, does that also make him an advocate for us when it comes to Satan having us?
  I mean, can Jesus say:'No, Satan,You can't have him'?

4. God gave Satan permission over Job, Jesus over Peter. Is it that when one is enjoying provision and protection from God that Satan asks for a person's life?

5. According to 1 Peter 5:9, does that mean Peter could have resisted the Devil when Jesus prophesied in Luke 22:31-34 that he would betray him?

6. Is Jesus, praying for Peter when Satan requested for his life, an act of advocacy?
  (b.) If yes, does that mean Jesus would never refuse the Devil but would always pray for us?

7. Should we pray that God should decline Satan's request for our lives even though, according to Luke 22:31(GNB)'It is to test the whole of us,separating the good from the bad.'
However, let us not forget that in Psalms 25, David asked God not to allow his enemies triumph over him (i.e God should decline Satan's request)

8. Is there a time we should be expecting the Devil to have permission over our lives or at every time?

Food for thought:
Did you know that Satan was given permission to get at David?
By making him take census of the Israelites? (1 Chronicles 21:9-13)

  Please, anyone out there, feel free to answer any of these questions to help an inquiring mind.
Thank you and God bless!!!