Arsenal got two first half goals from Olivier Giroud in a dominant first half and then held on as Newcastle upped their effort significantly in the second half.
Olivier Giroud and Aaron Ramsey both scored and Arsenal dominated proceedings but they couldn't get the third goal they needed to advance.
Olivier Giroud's rocket just before halftime was all Arsenal needed in their 3-0 win over West Ham at the Emirates.
He may have had a clanger against Monaco but he scored for his second straight Premier League match in Arsenal's 2-1 win over QPR in Week 28.
Arsenal recovered from their mid-week embarrassment against Monaco with a 2-0 win over Everton.
It wasn't evident in his Champions League effort but Olivier Giroud has been very good in the Premier League since returning from injury.
Olivier Giroud hit for a rapid-fire brace in the 27th and 29th minutes and Arsenal cruised into the FA Cup quarter-finals over Middlesbrough on Sunday.
Olivier Giroud has served his three match ban and is available for Arsenal's Week 21 match with Stoke City at the Emirates.
Olivier Giroud scored his third goal in his past two matches to put Arsenal up 2-1 in the 64th minute but they couldn't hold on and had to settle for a 2-2 draw at Anfield.
Olivier Giroud has been up and down since returning from injury but was definitely "up" again scoring a brace against Newcastle on Saturday.
Olivier Giroud didn't come into the match against Southampton until the second half but once he arrived he was spectacular.
Olivier Giroud scored Arsenal's only goal against Manchester United in stoppage time to mark his return to competitive action.
Arsene Wenger has indicated that Olivier Giroud will be available this weekend against Manchester United, three to four weeks ahead of schedule.
Olivier Giroud may not be fit to play but apparently his writing hand is in working order as he penned a new deal that will keep him at the club through 2018.