This is the 8462nd most frequent Russian word.
наше
"Наше" means "our" in English.
The word 'наше' is used as a neuter singular possessive adjective referring to something that 'we' own.
Это наше домашнее задание.
This is our homework.
Here, 'нашим' is the instrumental form of 'наше' to indicate possession in the context of pride about a project.
Мы гордимся нашим новым проектом.
We are proud of our new project.
The word 'наше' refers to a single, neuter noun 'фото' ('photo') as something owned by 'us'.