Aston Villa midfielder Gareth Barry said: "It's always harsh for any player to get booed, especially someone like Frank with what he's achieved and what he's done for his club and his country. So it was very wrong.
"Frank's experienced enough and a good-enough player to come through it."
Joe Cole, Lampard's team-mate at Chelsea, said: "I don't really know what to say because, for me, Frank has been one of England's most consistent players over the years. It's not nice to hear one of your mates getting that, because he's a top player.
"For me he's one of the best players in the world and doesn't deserve it. He's one of the best players I've played with and has never let Chelsea or England down. I don't understand it.
"He was voted England's player of the year and rightly so because he was brilliant. It's something that should not happen and you've just got to keep on going."