Well, this question,every DC comics fan has it, why because there are debates about this ALWAYS!!!.. Until now..
Personally, I think the movie [Batman v. Superman: Dawn of Justice](movie:711870) was made specially to introduce Batman to the new, rising DC Cinematic Universe (that I personally think that it will kick the MCU ass), so I think that they will introduce this iconic hero with majestuosity... How they will do that thing??..
The answer is easy... KICK. THE. KRYPTONIAN. ASS.
The methods that he will use to do it are still unknow, but by the rumors kinda looks he will use a super strong, armored and resistant suit (problably made of nokias and Chuck Norris saliva) with a little bit of Kryptonite.
We'll have to wait until March 25, 2016 to watch this.... But, what do you think??..