Gust of wind Says:
A line of strong wind 60 feet long and 10 feet wide blasts from you in a direction you choose for the spell's duration. Each creature that starts its turn in the line must succeed on a Strength saving throw or be pushed 15 feet away from you in a direction following the line.
I am wondering if this would either negate ranged attacks on the casting wizard, or at the very least pose disadvantage on the attacker?
The closest thing I could find to an answer was in the (DMG p110) under Strong Wind
A strong wind imposes disadvantage on ranged weapon attack rolls.
My personal experience in archery, is that there is basically no point in even trying to hit a target with anything above a mild wind. As it is very, very difficult at any distance.