The Rebels will face Dublin after beating Armagh yesterday in Abbotstown
All-Ireland champions Cork will meet rivals Dublin in the league semi-final after a hard-fought victory over Armagh in Abbotstown.
Cork got off to a fast start, racing into a 1-5 lead before Aimee Macken got Armagh's first point of the day.
Ephie Fitzgerald's side had to withstand a strong finish and despite conceding four goals they ran out 2-16 to 4-7 winners.
To win guaranteed them a second place finish in the table, setting up a semi-final date with the capital.
In the other semi-final, Kerry will face table toppers Mayo who have picked up seven wins from seven.
Elsewhere yesterday, Sligo retained their Division 2 status after beating Meath play-off final.
Lidl National Football League Division 1
Cork 2-16 Armagh 4-07
Lidl NFL Division 2 relegation play-off
Meath 2-12 Sligo 2-14
Lidl NFL Division 3 semi-finals
Waterford 7-15 Leitrim 0-06
Tipperary 5-11 Wexford 4-07
Lidl NFL Division 4 semi-finals
Longford 0-13 Antrim 2-11
Wicklow 2-06 Limerick 0-14