Martinelli managed to score against Liverpool's No.1 in a 3-2 victory for the Gunners in October but will be thankful to be on his side in Qatar.
Explaining what it is like to go head-to-head against Alisson, the Arsenal star told Sky Sports: "He's so good. When I went to the national team last time, when we played against when we played against Japan and South Korea, I remember when we were in training and I came one-v-one with him and it's so difficult, he's so big."
"They were good shots and he defended them because Alisson is so big. Brazil have really good keepers, even with Everton [Soares] in Brazil, he is so good. We are lucky to have them."