Everton twice came from behind to draw a dramatic Merseyside derby with Henderson having a stoppage-time winner ruled out for offside by the video assistant referee.
Before the late drama, Calvert-Lewin headed the equaliser after Mohamed Salah had put the visitors 2-1 ahead with a sweet strike.
Michael Keane then headed the hosts level from James Rodriguez's corner.
Henderson snapped afterwards: "It must be offside because the VAR that everyone wants said it was offside.
"Sometimes they bend the lines when they draw them so it's offside."
"Overall on chances we created we deserved to win and they'll be happier with a draw.
"We had confidence we would bounce back from Villa and we reacted well, we knew it would be intense with Everton doing well, thought we did enough to win but we'll take confidence for the next game."
Asked about Van Dijk's injury, he added: "Everyone keeps asking me so I guess it must not have been good challenge, Jordan Pickford apologised to me after the game and asked me to pass it on to Virgil."