Gary Yagel has written a booklet "Forging Bonds of Brotherhood" which offers some very good insights into men's ministry. He also offers some practical formats for small groups for men.

Here is an adapted version of his Forging the Foundation format:

Questions for Brothers in the Battle

1. Encouragement for the battle
How has your week gone?
What has been encouraging?
What has been frustrating?

2. Staying Sharp
Have you arranged to have some quality time with God this week?
If so, share something you learned from scripture.
If not, what got in the way?

(Optional question)
What do you need to do to make time with God a priority?

3. Fighting for our Families
What has been the most difficult part of being the spiritual leader lately?
What do you think you need to focus on most at home right now?

(Optional question)
Are there any unresolved conflicts in your family that you need to address by leading with repentance?

4. Fight spiritual battles
What spiritual battles can I help you fight by praying for you?

(Optional questions)
Which fruit of the Spirit have you been needing the most lately?
What is it that you don’t want to tell anyone? Find a safe friend that you can talk to about it.