The Crystal Palace striker appeared to have received rough treatment when Leeds visited Selhurst Park on Monday, with Phillips saying “I think he dives a lot” in a post-match interview.
This has been a criticism of Zaha throughout his career, although Vieira has praised the 29-year-old for keeping his ‘cool’ look.
Zaha has scored 11 times in the Premier League this season, equaling his best record yet with five fewer games.
Ahead of Palace’s trip to Southampton, Vieira said of Phillips’ remark: “It’s a very strange comment.
“You can all see the game and re-watch it. Some of them were lucky not to receive a yellow card.
“Their plan was clear, target Wilfried and he stayed calm and focused on his game.”