#1 Seth Rollins saved from getting impaled on WWE Raw

This incident is by far the scariest one on this list. The incident happened in 2014 on an episode of WWE Raw. The context here was that the Authority would hijack the match between Roman Reigns and Randy Orton.
Seth Rollins rushed to the ring along with Kane by his side and ambushed Roman Reigns. After they inflicted punishment onto the Big Dog, Rollins got out to grab a steel chair to finish the job. Meanwhile, the steel cage, which was used earlier in the night, was being lowered to trap Roman for the second round of a beatdown.
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While getting back inside the ring in the nick of time, Rollins was dangerously close to getting impaled on live television. Roman foreseeing the danger, called out, “Get out!” which quickly made Rollins assess the whole situation he was in. Kane also noticed the criticality and reacted by pulling Rollins out of the ring by grabbing his leg off camera.
If not for Roman and Kane's quick decision-making, Seth could have had one of the worst injuries ever on WWE's live television. Seth owes a big one to his Shield brethren.