Samp were twice forced to come from a goal down to earn the point.
“It was a strange game, we kept the ball possession, but we failed to score while they found the net playing on the counter-attack," Ranieri told DAZN.
“I am happy with the lads' reaction, we could have avoided those two goals. Perhaps we were not concentrated enough.
“We wanted to win, but we earned a draw instead. Spezia deserve praise."