Barca claimed a 2-0 UEFA Champions League away win over a Ronaldo-less Bianconeri on Wednesday night, courtesy of goals from Ousmane Dembele and a late Messi penalty.
After the match, the Catalan giants' social media team seemingly took the opportunity to have their say on the Ronaldo-Messi debate and shared a tongue-in-cheek post on the club's official Twitter page.
Not to be outdone, Juve were quick to respond, and claimed that Barca would see the real "GOAT" in action when Ronaldo returns to the pitch for the reverse fixture at the Camp Nou in December.
The Blaugrana currently top Group G with six points from their opening two fixtures, ahead of Juventus, Dynamo Kiev and Ferencvarosi.
1. Cristiano Ronaldo – 134 goals
10. Alfredo Di Stefano – 49 goals
9. Filippo Inzaghi – 50 goals
8. Thierry Henry – 51 goals
7. Andriy Shevchenko – 59 goals
6. Ruud van Nistelrooy – 60 goals
=4. Karim Benzema – 71 goals
3. Robert Lewandowski – 73 goals
=4. Raul Gonzalez – 71 goals
2. Lionel Messi – 119 goals
Scroll through the gallery to see the 10 leading goalscorers in UEFA Champions League / European Cup history