incrociare le dita significa in inglese

cross one's fingers▼(put the middle finger across the index finger)
verb

keep one's fingers crossed▼(hope for the best)
verb
[UK: kiːp wʌnz ˈfɪŋ.ɡəz krɒst] [US: ˈkiːp wʌnz ˈfɪŋ.ɡərz ˈkrɒst]