The Brazil star replaced Nasser Al Dawsari in the 77th minute, just after Salem Al Dawsari had scored to put Al Hilal 5-3 ahead. The former Paris Saint-Germain player nearly made an instant impact, exchanging passes with Aleksandar Mitrovic to create space before firing his shot just wide of the left-hand post.
The game finished 5-4 to Al Hilal after the United Arab Emirates-based Al Ain scored a last-gasp penalty to narrow the scoreline.
On the pitch after the full-time whistle, Neymar said: "I feel good... I always have a good team. I'm so happy. I'm back! I'm back!
Neymar suffered the ACL injury shortly after joining the Saudi Pro League (SPL) side while on international duty last October.
He had joined the Al Hilal in August 2023 from PSG in a ā¬90 million transfer, but played just five games before suffering the injury.
#neymar