Don Hampton appeals a summary judgment in favor of defendants Methodist Healthcare System of San Antonio, Limited, L.L.P., and Columbia/HCA Healthcare Corporation of Central Texas, dismissing the claim that his employment was terminated in retaliation for engaging in protected activity in violation of the Texas Commission on Human Rights Act; Title VII of the Civil Rights Act of 1964; and the Fair Labor Standards Act. Finding no error, we affirm.

We review a summary judgment de novo, employing the same standard used by the district court. McFaul v. Valenzuela, 684 F.3d 564, 571 (5th Cir. 2012). A district court “shall grant summary judgment if the movant shows that there is no genuine dispute as to any material fact and that the movant is entitled to judgment as a matter of law.” Fed.R.Civ.P. 56(a).

The court correctly concluded that Hampton failed to make a prima facie case of retaliation, as required under the applicable burden-shifting scheme. See Hagan v. Echostar Satellite, L.L.C., 529 F.3d 617, 624 (5th Cir. 2008); Long v. Eastfield Coll., 88 F.3d 300, 304 (5th Cir. 1996) (Title VII retaliation claim); Ptomey v. Tex. Tech Univ., 277 S.W.3d 487, 492, 495 (Tex.App.Amarillo 2009, pet. denied). It is undisputed that Hampton fell asleep while he was supposed to be caring for a patient who wandered down a hall and was found by a coworker. That, along with Hampton’s subsequent insubordination, were the stated reasons for his termination.

As the district court concluded, Hampton came forward with no direct evidence that his termination was retaliatory, nor was there sufficient temporal proximity between the termination and any of the protected activity to support a prima facie case of retaliation. See Raggs v. Miss. Power & Light Co., 278 F.3d 463, 471-72 (5th Cir. 2002). Hampton’s speculative and *641 unsupported assertions of, inter alia, a longstanding plot to fire him, perjury, disparate treatment, discrepancies in the timeline of events, and falsification of evidence are insufficient to defeat summary judgment. See Sanches v. Carrollton-Farmers Branch Indep. Sch. Dist., 647 F.3d 156, 165 (5th Cir. 2011).

We likewise find no abuse of discretion in the granting of summary judgment while Hampton’s discovery requests were outstanding. Even if Hampton’s oppositions could be construed as a motion pursuant to Federal Rule of Civil Procedure 56(d) for a continuance, Hampton’s speculative and conclusional assertions were insufficient to satisfy the requirements of that rule. See Raby v. Livingston, 600 F.3d 552, 561 (5th Cir. 2010).

Before granting summary judgment, the district court dismissed all claims against Methodist Healthcare Ministries of South Texas, Incorporated, and dismissed Hampton’s claim of sex discrimination. Hampton does not challenge those rulings and has therefore abandoned any such issues. See Longoria v. Dretke, 507 F.3d 898, 901 (5th Cir. 2007).

The summary judgment is AFFIRMED.