Boyd was starting his first Champions League game for the club, but put a header over the bar from a Kenny Miller cross when a goal looked certain.
He said: "That's football. These things happen. I would be more disappointed if the chances weren't coming.
"I didn't take them tonight but I'm sure that if they come again on Saturday against Aberdeen I look forward to putting them in the net.
"We need to pick ourselves up and we have a chance to stretch our lead in the SPL on Saturday."
Boyd was also scathing about Rangers' home performances in Group C so far.
The former Kilmarnock striker said: "If you look at our performances at home we don't deserve to be in the Europa League.
"We weren't good enough against Sevilla, the Unirea game was pathetic and we weren't good enough again."