You felt that something or someone was looking after you and that's what matters. I have trouble believing in higher beings but I would never tell you it was 'just luck' that you didn't get smashed into by a speeding tyre when I would be as unable to prove it was 'just luck' as I would that it was something else. You know what you felt and if you felt you were being watched over then that's that as far as I'm concerned!
anyway, glad that either by providence or luck you were kept safe.no, I've had a couple of times when I've thought, 'oh f*ck, that could have ended so differently', but never anything like you describe.