Bills' Aaron Williams -- Teammate Delivers Home Cooked Meal ... After Neck Injury

This is pretty cool ... Buffalo Bills safety Aaron Williams received an outpouring of love from teammates and Patriots players after suffering a neck injury on Sunday -- with one teammate bringing over a home cooked meal ... TMZ Sports has learned.

Williams was hospitalized after a nasty collision with Julian Edelman on Sunday -- but was released a short time later.

We spoke with Aaron's mom, Val Williams, who tells us she was "terrified" during the incident -- especially because she was at the game and tried to get to her son while he was down on the field.

"I was at the 28th row and ran all the way down to the 1st row when I saw he wasn’t moving ... people were just praying with me."

The next day, Val says Aaron's teammates went above and beyond to show their support.

"Corey Graham (safety) came over to his house and his wife made some food for Aaron, and the whole team has just been coming in bunches checking on him just seeing what he needs offered him rides to work."

Aaron's dad, Anthony, says his son's even getting love from the enemy -- Patriots players and fans ... including Pats DT Malcolm Brown, who called to check in.