The phrase "personal affront" means that someone feels insulted or disrespected by something that has happened, usually on a personal level. Full definition
-LSB-...] But there's a unique kind of derision that attaches to Coppola, a level of personal affront that never seems to fall on Whit Stillman or Noah Baumbach. (rogerebert.com)
Here disagreement is an intolerable personal affront. (firstthings.com)
But this is nothing compared with the indulgence of George Osborne, just because a dinner party friend has given him a newspaper to play out a vengeful grudge against Theresa May based far more on personal affront than political principle, like a toy catapult handed to a spiteful toddler. (theguardian.com)