Lisicki, the world number 23, took just 53 minutes to defeat Irina-Camelia Begu 6-0 6-1.
Begu, the eighth seed from Romania, had an awful afternoon, serving up eight double faults as her serve completely deserted her.
She could not take advantage of any of her three break points and Lisicki will have been grateful to have been able to conserve her energy ahead of Saturday's final.
Rezai booked her spot in the final with a thrilling three-set victory over Angelique Kerber in a match lasting a little under two hours.
Both women were inconsistent with their serve, producing 24 double faults between them, but it was Kerber's failure to convert her break points that handed the initiative to the Frenchwoman.
Kerber managed to bring up 18 break points but converted just three while her opponent took advantage of five of her seven break opportunities.
Rezai, the world number 114, eventually prevailed 2-6 6-3 7-5.